The pattern in the fossil record which supports the idea of a mass extinction event is the sharp decrease in biodiversity in rock layers.
What is a mass extinction event?A mass extinction event is one which in which a large number of species of organisms die off due to natural or artificial causes.
A mass extinction events is concluded to have killed the dinosaurs and other species, in part as a result of an asteroid striking the planet.
The evidence for this in fossils records is that the lower, older rock layers contains a great diversity of fossil life forms, while the younger layer immediately above is contains few organisms in comparison.
Therefore, the sharp decrease in biodiversity in rock layers provides evidence for a mass extinction event.
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In humans, if a non-disjunction event led to an individual with a genotype of xxy, they would.
In humans, if a non-disjunction event led to an individual with a genotype of XXY, they would be male because they have a Y chromosome.
What are X and Y chromosomes?The X chromosome and Y chromosome are homo-logous chromosomes that determine the se_x in mammals.
The presence of the Y chromosome is indicative of the males, whereas two X chromosomes are females in normal conditions.
Non-disjuntion refers to the faulty separation of homo-logous chromosomes during meiosis.
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What abiotic factors affect the rate of photosynthesis.
Answer:
The rate of photosynthesis in a plant can be determined by three external factors: temperature, light intensity, and available carbon dioxide concentration. In any given situation any one of these may become a limiting factor if they are below the optimal level (Alcott and Mindorff).
Plants are ? They make their own food.
Animals are? They consume other organisms for food
Answer:
Plants are producers.
Animals are consumers.
According to the food web, how many primary consumers are indicated?
Select one:
O a 2
O b. 1
O c.3
O d.4
Answer:
C. 3.
The grasshopper, rabbit, and mouse are all primary consumers. A primary consumer is an organism that consumes producers (plants/primary producers). A primary consumers only eat plants and dont eat any meat so the grasshopper, mouse, and rabbit would be the three only primary consumers.
Hope this helps! :D
As per the food web, the number of primary consumers is 3. The correct option is c.
A food web is a sophisticated network of linked food chains that represents the movement of nutrients and energy within an ecosystem. It exemplifies how various organisms in a society rely on one another for survival.
Herbivores, usually referred to as primary consumers, are very important to the food chain. They are organisms that consume plants or compounds derived from plants directly.
They act as a link between lower-level consumers (plants) and more affluent ones (predators). Rabbits, deer, cows, and other insects are a few examples of primary consumers.
Primary consumers use plant materials to get energy, but they also help control plant populations, affecting the ecosystem's general stability and balance.
Thus, the correct option is c. as it is having 3 primary consumers namely rabbit, grasshopper, and mouse.
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HELPPP I AM STUCK WITH THIS PROBLEM !
Answer:
All red boxes should be filled with Hh.
Explanation:
The genotype should 100% be Hh, due to the dominant (H) existing in all boxes (which represents the possibilities of the likelihood of inheriting a family trait). This means the likelihood of inheriting 2 horns is 100%.
a person is camping outside. the person toasts a marshmallow by holding above the flames of the fire. Does the marshmallow cook because of covention , conduction, radiation. please explain your answer
I dont take links or files
Answer:
by convection because convection is the transfer of heat due to indensity
What feature of the genetic code makes it possible for a single protein to be encoded by more than one mrna sequence?.
Answer:
What feature of the genetic code makes it possible for a single protein to be encoded by more than one mRNA sequence? More than one codon can specify the same amino acid. How were researchers able to "crack the genetic code"?
Your friend tells you that sunlight breaks rocks into small pieces. using what you learned from the video, revise this statement, explaining how the process is more complicated than that
The process is more complicated than that because the cycle of expansion and contraction brings about the weathering process.
What is Weathering?This is the process in which rocks are broken down into smaller fragments or particles.
Sunlight heats the rocks and causes expansion which cools down during the night. This cycle of expansion and contraction is what disintegrate the rocks into smaller pieces.
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What gas to trees and other plants REMOVE from the atmosphere, which helps decrease global warming?
I need the answers asap I will mark it
Answer:
Carbon Dioxide or CO2 is removed from atomsphere by trees and other plants through photosynthesis.
The basic elements of the nervous system are called:.
Answer:
the central nervous system and the peripheral nervous system
Explanation:
The nervous system has two main parts:
The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
According to the phylogeny, which protists are in the same eukaryotic supergroup as plants?.
Answer:
Green algae and Red algae.
Explanation:
Answer:
Red algae and green algae are included in the supergroup Archaeplastida. It was from a common ancestor of these protists that the land plants evolved, since their closest relatives are found in this group. What is a protist as in the protist kingdom?
Explanation:
5which of the following
does not describe
the structue of DNA
Answer:
C. contains adenine-guanine pairs
Explanation:
ANSWER ASAP BEING TIMED
which of the following is an example of species diversity
the number of people with brown eyes in a community
the different types of fish in a coral reef
the different sizes of beaks among woodpeckers
two kittens with stripes and three kittens without stripes
Answer:
2
Explanation:
What was new about Jacques Cousteau’s study of the ocean?
He created an underwater laboratory.
He documented life in the deep ocean.
He was the first to scientifically catalogue undersea life.
He was the first naval officer to also consider marine biology.
Answer:
The Answer Is He Created An Underwater Laboratory
Which is probably NOT part of the environment of a goldfish?
gravel
a bowl
water
a tree
A tree wouldn't be part of the environment of a goldfish.
Answer:
A tree
Explanation:
Trees can't live underwater! plus, they are too big to fit in a small fishbowl. what can fit in a fish bow is gravel for the "seafloor" of the bowl, water for the fish to live in, and a bowl for the water of the fish, but a tree won't fit or live in the bowl.
Determine whether each phrase mainly describes surface ocean currents or deep ocean currents. found near the top of the ocean caused by prevailing winds caused by differences in water density caused by differences in water temperature influenced by rotation of earth found closer to the ocean floor
Influenced by rotation of Earth
caused by prevailing winds
found near the top of the ocean
The phrases that describe deep Ocean currents are :
caused by differences in water
found closer to the ocean floor
caused by differences in water density
Surface ocean currents are found near the top of the ocean, and they are caused by prevailing winds. The wind creates a force on the surface of the ocean, which causes water to move in the direction of the wind.
What are these currents responsible for ?These currents are responsible for redistributing heat around the planet, making them an important factor in regulating climate.
Deep ocean currents, on the other hand, are caused by differences in water density and temperature. Cold, dense water sinks to the bottom of the ocean, creating a current that can move across the ocean floor.
This process is known as thermohaline circulation, and it helps to redistribute nutrients and oxygen throughout the ocean, making it an important factor in marine ecosystems.
The rotation of the earth also influences ocean currents. Due to the Coriolis effect, surface currents in the Northern Hemisphere tend to flow clockwise, while currents in the Southern Hemisphere tend to flow counterclockwise. This effect is caused by the rotation of the earth and the resulting centrifugal force.
Finally, currents that are found closer to the ocean floor are deep ocean currents. These currents are slower and less visible than surface currents but can have a significant impact on the ocean's circulation and the Earth's climate.
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Where does frontal inversion occur in the atmosphere and how does it affect us and the environment? Wanther High
Frontal inversion occurs near large water bodies and it leads to a change or invertion in the property of the atmosphere.
What is frontal inversion?Fontal inversion occurs through the impairment of cold air mass in warm air mass.
This leads to a warm air just above the two air masses as cold air distrupt the warm air masses.
Therefore, the frontal inversion takes place near water bodies and it leads to a change or invertion in the property of the atmosphere.
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Fossil evidence indicates that some dinosaurs had feathers. If birds are indeed descended from dinosaurs, feathers are what kind of character?.
What is the shape of DNA when it is not undergoing replication?
A.Double Helix
B.Circular
Answer:
B.circular
Explanation:
Describe what would happen to human *** cells (sperm and egg) if they were not formed by meiosis, but instead, formed by mitosis. How many chromosomes would each s** cell have? How would this affect fertilization and the newly formed cell
Answer:
Normally, meiosis causes each parent to give 23 chromosomes to a pregnancy. When a sperm fertilizes an egg, the union leads to a baby with 46 chromosomes.
But if meiosis doesn’t happen normally, a baby may have an extra chromosome (trisomy), or have a missing chromosome (monosomy). These problems can cause pregnancy loss.
Mitosisis the dividing of all other cells in the body. It’s how a baby in the womb grows. Mitosis causes the number of chromosomes to double to 92, and then split in half back to 46. This process repeats constantly in the cells as the baby grows. Mitosis continues throughout your lifetime. It replaces skin cells, blood cells, and other types of cells that are damaged or naturally die.
During pregnancy, an error in mitosis can occur. If the chromosomes don’t split into equal halves, the new cells can have an extra chromosome (47 total) or have a missing chromosome (45 total).
If gametes were produced instead by mitosis each gamete would be diploid not haploid. During fertilization of diploid gametes, the zygote would become 4n=92. With each new generation the number of chromosomes would double.
Which body system is responsible for rapid communication and control between other systems of the body and the brain?.
Which statement best describes the overall function of the human
respiratory system? *
Mark only one oval.
The heart pumps blood containing carbon dioxide into the lungs, where it is
absorbed
Oxygen is transferred into the blood, which circulates the gas throughout the body
Oxygen is taken into the lungs and exchanged for carbon dioxide, which is exhaled
Carbon dioxide is taken into the lungs and exchanged for oxygen, which is absorbed
Answer:
oxygen is taken into the lungs and exchanged for carbon dioxide which is exhaled
Which of the following types of organisms use ATGC bases in their DNA?
A)Bacteria
B)Plants
C)Animals
D)All of the above
Answer:
B) Plants is the answer correct me if I'm wrong
State two features which are only found in dicotyledonous plant
Which structure of the intervertebral articulation gives the disc its resiliency and ability to absorb shock
Answer:
nucleus pulposus provides both flexibility and resilience to the intervertebral disc and the ability to absorb shock
The process in which a gas turns back into a liquid is called __________. What word completes the sentence?
Answer:
The word is condensing.
Which of the following best describes pollution discharged by cruise ships? a. cruise ships only discharge sewage and liquid wastes. b. cruise ships discharge sewage, solid, liquid, and air pollution. c. it is illegal for cruise ships to discharge untreated sewage in the ocean. d. cruise ships do not discharge oil or petroleum waste. please select the best answer from the choices provided a b c d
Answer:
b. Cruise ships discharge sewage, solid, liquid and air pollution
Explanation:
hope this helps
According to question option "B" which is Cruise ships discharge sewage, solid, liquid, and air pollution.
How the cruise ship results in a large amount of pollution?Due to the existence of oil sometimes there are oil leaks which are the production of liquid waste. In complement to this, there is a large amount of sewage and solid waste which are left untreated and released into the seawater.
Thus, option "B" is correct.
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If you live in the southern hemisphere, what season would you be experiencing in position this diagram?
A)
Fall
B)
Summer
C)
Winter
D)
Spring
C) Winter.
I used someone else's answer and it was incorrect so I did it myself
Answer:
it is winter
Explanation:
i took the class
If anyone has read the book “When no one is watching”, may someone tell me the theme of the book? I need this for a report since I’m unsure what the theme is
Answer: The Theme of the book "When no one is watching" is
questioning of reality
Explanation: nothing
If nondisjunction occurs during meiosis I, how many of the daughter cells will have an incorrect number of chromosomes after meiosis I and meiosis II are complete
If nondisjunction occurs during meiosis I, then four (4) daughter cells will have an incorrect number of chromosomes after meiosis.
What is non-disjunction?Non-disjunction refers to the faulty separation of chromosomes during cell division (either meiosis or mitosis).
Meiosis is a cell division that produces four daughter cells having half of the genetic material of the parental cell.
Non-disjunction in meiosis I is known to cause an imbalance in all daughter cells (i.e., in 4 daughter cells).
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