Algae growth produces a high concentration of oxygen on the surface, which decreases with depth. The less oxygen available in deeper strata, the fewer surviving forms of life. The correct option is C.
-----------------------------------------------------------------------------------------------------------
Available data:
Depth of Water Dissolved Oxygen Amount of Algae/sq. meter
(meters) (mg O₂ per liter) (kilogram)
1 9.2 550
5 9.0 535
10 8.5 404
15 7.0 155
20 5.5 45
25 4.2 12
According to this table,
On the surface, there is a higher amount of algae, and hence, more dissolved oxygen. As it gets deeper, algae amount decreases as well as dissolved oxygen.
If oxygen decreases with depth, it suggests that plants -oxygen producers- lack, probably due to the lack of sunlight reaching the bottom.
Other forms of life
Algae growth on the surface blocks the pass of light to the deeper strata.The lack of light in deeper strata affects plants' growth.If there are no plants in deeper areas, there is no dissolved oxygen.Since animals need oxygen, they probably can not survive in deep regions.With no oxygen, the bottom turns into an anaerobic environment, in which anaerobic bacteria can survive.
These conditions can be related to eutrophication.
Eutrophication is a biological process produced in water by an oversupply of nutrients or organic matter.
This oversupply, mainly of nitrogen or phosphorous, favors phytoplankton multiplication, especially cyanobacteria.
Cyanobacteria overgrowth leads to an enhance in primary productivity and reduces the pass of radiation to deeper strata. This fact affects biota in deeper zones.
Gradually sedimentation begins, caused by the death of some vegetable organisms that sink in the bottom.
These sediments suffer decomposition in the absence of oxygen. Anaerobic bacteria act and produce fermentation.
Phytoplankton overgrowth on the surface and fermentation process in the bottom, originate toxic compounds that can damage the animals in the water body.
Animals die, creating more sediments in the bottom where there are anaerobic conditions.
The continued increase in decomposition and fermentation produces a bad smell and toxicity.
The result of eutrophication is the stratification of the water mass:
First superficial layer, the overgrowth of blue-green algae, produces toxins and interrupts the pass of light to deeper areas. The surface then becomes warmer. The second layer might have oxygen available for the animals. In the third layer, there is no oxygen, so life is impossible for animals or plants. In the fourth layer, there are animals and plant remains in the process of sedimentation. At the bottom, there are organic matter and anaerobic bacteria in charge of decomposition and fermentation, through which they produce toxic gases and smell.Options:
A) All of the life forms in the lake can be found within the top 10 feet of water. FALSE. Depends on the conditions and the species.
B) As you increase in depth of water, plant density decreases while fish density increases. FALSE. Plant and animals density decrease, as available oxygen decrease.
C) Organisms in the lake rely on dissolved oxygen to survive. The lower the dissolved oxygen, the lower the survival rate. TRUE.
D) Plant survival is related to the amount of light (depth) but animal survival is related to the amount of oxygen available. The lower the amount of dissolved oxygen, the less animal life is present in the lake. FALSE. Light does not reach the bottom, so there are no plants there. Plants also depend on oxygen, not only animals.
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how many species of marine amphibians are there today?
Answer:
8,000.
Explanation:
Nearly 90% are frogs.
does the moon make it's own light? explain how the moon gives us light at night?
Answer:
The moon doesn't produce its own light. Moonlight is actually sunlight that shines on the moon and bounces off. In other words, its surface reflects light from the sun.The perceived brightness of the moon from Earth depends on where the moon is in its orbit around the planet.
Explanation:
How long does it take the Earth to move from Point A to Point C?
Answer:
Explanation:
As you know that the earth has two types of motions,
namely rotation and revolution. Rotation is the
movement of the earth on its axis. The movement of
the earth around the sun in a fixed path or orbit is
called Revolution.
The axis of the earth which is an imaginary line,
makes an angle of 66½° with its orbital plane. The
plane formed by the orbit is known as the orbital plane.
The earth receives light from the sun. Due to the
spherical shape of the earth, only half of it gets light
from the sun at a time (Figure 3.2). The portion facing
the sun experiences day while the other half away from
the sun experiences night. The circle that divides the
day from night on the globe is called the circle of
illumination. This circle does not coincide with the
axis as you see in the Figure 3.2. The earth takes about
24 hours to complete one rotation around its axis.
The period of rotation is known as the earthday. This is
the daily motion of the earth.
2021–22
MOTIONS OF THE EARTH 19
Figure 3.3 : Revolution of the Earth and Seasons
What would happen if the earth did not rotate? The
portion of the earth facing the sun would always
experience day, thus bringing continuous warmth to
the region. The other half would remain in darkness
and be freezing cold all the time. Life would not have
been possible in such extreme conditions.
10. Below is the structure of octane, the major component of gasoline. What type(s) of
bond(s) is/are found in a molecule of octane? (Hint: Think of the shape of the molecule.)
Η
H
H
H
Η
Η Η
Η
Η
H-C-C-C-C-C-C-C-C-H
H
H
Η Η Η Η Η
Answer:
Covalent bond
Explanation:
The answer is covalent bond
A molecule of octane which is a component of gasoline contains covalent bonds.
Octane is a hydrocarbon compound, specifically an alkane, with the molecular formula C8H18. The structure you've provided illustrates the arrangement of carbon (C) and hydrogen (H) atoms in octane.
In octane, each carbon atom forms four single covalent bonds with other atoms (either carbon or hydrogen). Covalent bonds are formed when atoms share electrons to achieve a stable electron configuration. In the case of octane, carbon atoms share electrons with other carbon and hydrogen atoms to fill their valence electron shells, resulting in a stable and energetically favorable arrangement.
The structure of octane is a straight-chain alkane, with carbon atoms forming a chain and hydrogen atoms attached to the carbon atoms. The single covalent bonds between the atoms are represented by lines in the structural formula.
The shape of the molecule is determined by the arrangement of atoms and the types of bonds between them. In the case of octane, the single covalent bonds allow the carbon atoms to form a linear chain.
In conclusion, octane molecules are held together by covalent bonds, specifically single covalent bonds between carbon and hydrogen atoms. This type of bonding contributes to the stability and structure of the octane molecule, making it a major component of gasoline and contributing to its combustible properties.
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how much land is louisiana losing every year as a result of coastal erosion?
Louisiana is losing about 16 square miles/year as a result of coastal erosion. This estimation is a variable as the rate of coastal erosion varies from time to time.
Coastal erosion is the process through which local sea-level rise as a result of intense wave action in coastal sea levels which deteriorate over time along the shore.
In Louisiana, coastal erosion results in the depletion of wetlands via the routes of coastal lines in swamps and marshes. Storms and other natural occurrences that induce erosion impact all coasts. The combination of storm surge at high tidal waves with additional effects from large waves, as well as circumstances often associated with landfalling tropical severe storms, provides the most devastating conditions in landfilled regions.
Therefore, the amount of landmass lost by Louisiana is estimated to be 16 square miles/year as a result of coastal erosion.
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HELP FAST PLEASE
Which graphic organizer best compares the energy inputs and outputs of cellular respiration
and photosynthesis?
A)
А
B)
B
c
C
D)
D
Answer:
B
Explanation:
I believe it is #B because light and energy are what's needed for plants to begin the photosynthesis cycle, which then produces chemical energy which in turn contributes to cellular respiration ect.
I hope this helped :)
The graphic organizer best compares the energy inputs and outputs of cellular respiration and photosynthesis - B. Light energy → photosynthesis → chemical energy → cellular respiration → chemical energy.
Energy transfers from one cellular reaction to another, it changes its form from one type of energy to another. In photosynthesis and cellular respiration energy converts as follows:
photosynthesis: In this cellular process light energy is trapped that helps in the conversion of inorganic matters to organic matter which stores energy in the form of chemical energy called glucose.cellular respiration: The products of photosynthesis are glucose (stored chemical energy) and oxygen converted in the carbon dioxide and water with ATP a chemical compound that stores a high amount of energy.Thus, The graphic organizer best compares the energy inputs and outputs of cellular respiration and photosynthesis - B. Light energy → photosynthesis → chemical energy → cellular respiration → chemical energy.
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Which experiment can determine if an object is a living thing?
A.Take a small sample to see if it is made of cells using a microscope.
B.Measure the change in external temperature for a day.
c.Measure the amount of carbon it releases in an hour.
D.Take a small sample to see if fire can change its shape.
Answer:
d
Explanation:
An experiment that can determine if an object is a living thing by taking a small sample to see if it is made of cells using a microscope. Thus, the correct option for this question is A.
What are the characteristics of living things?The characteristics of living things are as follows:
They have a tendency to construct a balance from the surrounding atmosphere through the process of homeostasis. They have the capability to grow, reproduce, and adapt to the surrounding environment. They perform an act of breathing and move from one place to another. They require food in order to derive energy.A Microscope is a laboratory instrument that is remarkably utilized in order to visualize small objects or cell samples that are too small to examine with unaided eyes. So, any living organism is definitely made of cells that are easily distinguished with the help of a microscope.
Therefore, taking a small sample to see if it is made of cells using a microscope signifies an experiment that can determine if an object is a living thing. Thus, the correct option for this question is A.
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Why is it important that the phospholipid has both hydrophilic and hydrophobic
regions?
Answer:
The formation of a micelle is a response to the amphipathic nature of fatty acids, meaning that they contain both hydrophilic and hydrophobic regions.
Explanation:
Biological membranes remain fluid because of the unsaturated hydrophobic tails, which prevent phospholipid molecules from packing together and forming a solid.
can anyone help please，question on the pictute
Answer:
A. In water it is stabilizing the amount of water coming in and out of the cell.
In the sugar solution, it is filled with the sugar solution.
B. Transpiration
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what can the enzyme sucrase break down?
Answer:
Sucrase is an enzyme that breaks sucrose down into glucose and fructose.
Explanation:
The bonds between the glucose and fructose molecules making up the disaccharide sucrose break due to the enzyme sucrase, and water is added as
H
and
OH
to the two molecules. This is called a hydrolysis reaction.
Hydrolysis is a chemical reaction in which water (hydro) breaks (lysis) a chemical bond in a dimer (two molecules bonded) and polymer (many molecules bonded) by adding
H
to one molecule and
OH
to the other molecule.
Where must an mRNA attach before protein production can begin?
Answer:
to a Ribosome
Explanation:
mRNA is produced inside the nucleus of a cell according to the genetic information present in the DNA of the cell. this process is known as Transcription.
Then it's sent to ribosomal subunits in the cytosol through nucleopores. then it attaches to the ribosome. the ribosome reads the nitrogenous base sequence and pairs the tRNAs with complementary nitrogenous bases. (your answer is here, but if you want to know more, continue reading it.)
Each tRNA contains a tri-nucleotide that is collectively known as an anticodon which has the complementary bases of the relevant codon on the mRNA.
Each tRNA has captured a protein. the type of protein is determined by the sequence of the anticodon.
It means two tRNAs with two different anticodons cannot bring the same protein to the ribosome.
the Ribosome separates the proteins attached to tRNAs and links them as a chain.
the final result is a polypeptide chain. I explained to you the basic protein synthetic process.
image credit: Wikipedia
Somebody help me please
Organelle s is most likely the ___________________.
smooth endoplasmic reticulum
rough endoplasmic reticulum
golgi apparatus
centrioles
Answer:
Answer is smooth endoplasmic reticulum
Explanation:
If you like my answer than please mark me brainliest thanks
as you are reading this question, the cells in your eyes are firing in response to the light coming from this paper. which type of neuron is carrying this message to the brain?
Answer:
sensory neuron
Sensory neurons are responsible for carrying the message or information from the sense organs such as eyes, ears, nose to the brain.
What are sensory neurons?Sensory neurons are the nerve cells which are activated by the sensory input from environment. The sensory input include touching a hot surface with the fingertips, the sensory neurons will be the ones that are firing and sending off signals to the rest of the nervous system in the body about the information they have received.
There are five common types of sensory neurons which include mechanoreceptors, thermoreceptors, nociceptors, electromagnetic receptors and chemoreceptors.
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What are some of the ways that animals rely on plants? (Choose all that apply)
Animals rely on plants directly or indirectly for food.
Animals breathe the carbon dioxide released by plants after photosynthesis.
Animals use the plants’ chlorophyll to make their own food.
Animals breathe in the oxygen a plant expelled during photosynthesis.
Answer:
Animals breathe the carbon dioxide released by plants after photosynthesis. And animals use the plants’ chlorophyll to make their own food.
Explanation:
Animals breathe the carbon dioxide released by plants after photosynthesis is the way by which animals rely on plants. The correct option is B.
Thus, In the ecosystem of the Earth, photosynthesis is an essential process. It serves as the primary source of energy for plants, which are ultimately ingested by herbivores.
This energy is then transferred up the food chain to higher-level consumers.
Aerobic respiration, the mechanism through which mammals and other creatures produce energy by mixing oxygen with glucose, depends on the oxygen created during photosynthesis.
Thus, Animals breathe the carbon dioxide released by plants after photosynthesis is the way by which animals rely on plants. The correct option is B.
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the __________ vertebrae articulate with the corresponding ribs.
Answer:
Each vertebra contains three points of articulation with ribs. The superior demifacet of a thoracic vertebra articulates with the corresponding rib (costovertebral joint). This rib articulates again with the costal facet on the transverse process (costotransverse joint). The inferior demifacet articulates with the rib below.
Explanation:
help pls help pls pls
Answer:
Explanation:
hi how are you
during which stage of mitosis are chromosomes lined up in the center of the cell?
Answer:
metaphase
Explanation:
the chromosomes move to the central plane of the cell and arrange themselves at the spindle equator independently attached to the spindle fibres by their centromeres
stomata are found on the surface of leaves and are important for
Answer: Filtering gas in and out of the plant.
Explanation:
The Stomata are like little mouths that open and close to let gas in or out, and can change the color of the leaves.
To perform cellular respiration hydrogen atoms are moved across a membrane inside the mitochondria.
If no energy is required to move the hydrogen atoms from one side of the membrane to the other how
does this happen?
Answer: Passive transport
Explanation: Passive transport does not require energy to move substances across a membrane.
Which of the following is an example of an r-selected species?
most insects
elephants
oak trees
whales
humans
Answer:
Examples of r-selected species include pest organisms, such as rodents, insects, and weeds.
Explanation:
Most of the insects are the R-selected species. Hence, the correct option is A.
What are R-selected species?These are the organisms having reproductive strategy that is characterized by high reproductive rate, short life span and numerous offspring with a low level of parental investment.
They are often found in environments that are unpredictable and change rapidly, and they are well adapted to these conditions because of their ability to produce numerous offsprings.
The large number of offspring increases the chances of survival for at least some offspring, even if the environment changes or if only a few survive. Examples-Certain insects, rodents, and some plants. Hence, the correct option is A.
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Which of the following is true breeding plants if they are allowed to self pollinate a b or c
Answer:
C
Explanation:
The [blank] structures of the cytoskeleton are found in animal cells but not in plant cells?
Answer:
Animal cells have centrioles, centrosomes (discussed under the cytoskeleton), and lysosomes, whereas plant cells do not.
Explanation:
Hope this helps.
identify the landmark found on the proximal end of the humerus.
Answer:
greater tubercle
Explanation:
Many organizations are sponsoring _____________ workshops and training to affect people's interactions in the workplace and establish a more positive working environment.
Question 41 options:
A)
Diversity
B)
Motivational
C)
'touchy-feely'
D)
Anthony Robbin's
Answer:
B
Explanation:
yes it B because to help in prove the workers to build now ideas
10. Explain how both a population of moose and wolves in the same area could each affect the
size and distribution of the plant population in a community:
Answer:
Since moose are herbivores, they could cause a plant population to decrease in size.
Since wolves are carnivores and hunt moose, there would be less moose feasting on plants, so the plant population would be allowed time to grow back larger.
Depending on how many wolves there are to moose, the plant population will tend to vary.
For example: If the moose population is greater than the wolf population, there will be a smaller population of plants. On the other hand, if the wolf population is greater than the moose population, there will be a greater population of plants.
Hope this makes sense :)
helpppppppppppppppppp
Answer:
its osmosis
Explanation:
Active transport is the energy consuming process that involves the movt of molecules from their region of low concentration to a region of high concentration.
Diffusion is the net movt of molecules or ions from a region of their higher concentration to a region of their lower concentration.
Facilitated diffusion is the transport of molecules and ions across a membrane by specific transport proteins,carriers and channel proteins found within the membrane in the direction of lower concentration down a concentration gradient.
Osmosis is the net movement of water molecules from a region of their high concentration to the region of their lower concentration through a partially permeable membrane. OR this is the passive movement of water molecules across a partially permeable membrane from a region of lower solute concentration to a region of higher solute concentration.
Answer:
ayo its me imthetarget hows it going
Explanation:
Question 6 (3 points)
Solve or answer the item.
The correct plural form of ovary is
Enter the answer.
Question 7 (3 points)
Solve or answer the item.
The abbreviation that represents as desired is
Enter the answer.
Answer:
Plural form of ovary is ovaries.
The abbreviation that represents as desired is ad lib
a variety of factors can inhibit or enhance calcium absorption. indicate whether each situation increases or decreases calcium absorption by dragging it to the appropriate column.
Calcium is very important to the organism, and different factors influence its absorption. Pregnancy, Infancy, Vitamine D increase calcium absorption. Oxalic acid, phytic acids, and being over 70 years old decreases absorption
------------------------------------------
Calcium is a highly significant mineral for the appropriate development and functioning of the organism.
Different factors influence the mineral absorption, favoring it or limiting it.
Among the factors that might favor calcium absorption, we can mention
PregnancyIn the second and third trimesters of pregnancy, calcium absorption is the greatest. The intestinal absorption of calcium in women during this period increases to meet different demands. Calciotropic hormones are involved in the process.
Vitamine DVitamine D is one of the principal factors involved in calcium regulation. Vitamine D helps to double calcium absorption through the thin intestine.
InfancyDuring infancy, the body is growing, bones are developing, and the body needs to consume a high amount of calcium to accomplish these functions.
Calcium is a baseline mineral to provide children while growing, especially in their first periods of life.
Among the factors that limit calcium absorption, we can mention
Age exceeding 70 years oldElder people consume less food, and together with food consumption decrease, a less amount of necessary mineral is consumed.
With aging, calcium absorption decreases approximately 20% in the intestine.
Oxalic acid and Phytic acidMany substances, together with ingested calcium, form compounds that impede mineral absorption through the small intestine.
So in the presence of substances such as oxalic acid and phytic acid, calcium absorption is limited.
It is recommended not to consume food rich in calcium and food rich in these other substances simultaneously.
Pregnancy, Infancy, Eating vitamine D-enriched food ⇒increases calcium absorptionOxalic acid in spinach, high fiber diet rich in phytic acids, and being over 70 years old ⇒ decreases calcium absorption-----------------------------------------------
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someone please solve this
Answer:
A - nucleus.
b- cellwall
c- vacuole
D- mitochondria