Answer:
B:index fossil
Explanation:
The trilobite fossils are examples of index fossils.
Index fossils are most desirable for stratigraphic construction and to predict ancient life forms on earth.
Index fossils are fossils with the following characteristics;They have short stratigraphic spanThey have a wide geographic distributionShows rapid evolutionary trends or changes.Trilobite is one of such fossils that have the above listed properties.
what are the differences between antibiotics and vaccines???????........................
Answer:
Antibotics are to help treat a sickness while vaccines are to help prevent certain sicknesses... hope that helps a little.
Explanation:
Antibiotics are used to treat severe infection, but Vaccines prevent infections from ever becoming established. Vaccines are right to be used for protection against any future infection. and Antibiotics are effective for stopping the reproduction process of bacteria and do not have any effect on viruses. These are also not to be used for preparing for potential future infection.
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Who knows how to do this pls answer it 100% smart pls tell me the correct answer smart people
Answer:her arm is puffy, red, and swollen
Explanation:
What happens when magma cools during the rock cycle? Igneous rock is formed. Metamorphic rock is melted. Sediments form sedimentary rock. Metamorphic rock forms sediments.
Answer: igneous rock is formed
Explanation:
When magma cools down during the rock cycle then igneous rock is formed. Thus, the correct option is A.
What are Igneous rocks?Igneous rock is one of the three main rock types, while the other being sedimentary and metamorphic rocks. Igneous rocks are the rocks formed through the cooling and solidification of magma or lava from volcano. The magma can be derived from partial melts of existing rocks in either a planet's mantle or the crust.
Lava from the volcano cools to form volcanic rock as well as volcanic glass. This magma can also extrude into Earth's atmosphere as part of a violent volcanic explosion. This magma then solidifies in the atmosphere to form volcanic rock called as tephra. In the atmosphere, tephra is more often called as volcanic ash.
Therefore, the correct option is A.
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if an organism has a diploid number of 12, how many possible combinations of chromosomes could exist in its gametes with no crossing over?
a.) 8
b.)16
c.)32
d.)64
Answer: D
Explanation:
Chromosomes are the inherited unit of the organism which transfers the parental gene to the offspring.
The diploid is the paired chromosome quantity present in the cell that originates from each parent.
The correct answer is:
Option D. 64
This can be explained as:
The diploid (2n) number of chromosomes = 12Haploid (n) number of chromosome = 6The possible number of chromosome pairs is given by 2ⁿ. Where n = a haploid number of chromosomes.So, the possible combinations of chromosomes that could be found in the gametes with no crossing over will be:
= 2⁶
= 64
Therefore, 64 possible combinations of chromosomes can be present.
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I added a picture it’s simple plz help
Answer:
The higher the density, the more closely packed the particles called atoms and molecules. The lower the density the more spaced muy the particles are
If density = mass divided by volume, than the more volume a material has the less dense it is. For example, if there are five people in a room that is 5ft. by 5ft. the people will be tightly packed together and more dense. If those same five people were in a room that is 20ft. by 20ft. they would have more space and it would not be as dense in the room.
magma and lava form sedimentary true or false
The image below shows a small bean sprout what does the sprout need to grow into a healthy plant?
What the effects of sunlight on the aquatic life inhabiting your body of water on the Indian ocean?
Answer:
Any living creature that lives beneath the Pacific surface will absorb the sunlight for nourishment. If the sun banishes all the living organisms (plants and algae) will suffer due to the lack of photosynthesis. The sun has a massive effect on the aquatic life in the oceans, lakes, or any body of water; including the Pacific Ocean.
Explanation:
:)
What is different about normal cell division and cancer cell division?
Answer/Explanation:
Normal cell division is a very controlled process.
There are several checkpoints where the cell ensures the cell is:
receiving the correct signals to dividethat the environmental conditions are favourable for the cell to dividethat there is no damage to the DNA.However, cancerous cells proliferate uncontrollably. This is because they can bypass the checkpoints and divide without the necessary signals. This means cell division keeps occurring even when conditions are unfavourable and the DNA is damaged.
Most bacterial cells have a cell membrane and a cell wall.. true or false
Answer:
true
Explanation:
Sam does an experiment in his lab. He discovers that the mass of the reactants before his
experiment is the same as the mass of the products after his experiment. What did he prove?
Answer:
The law of conservation of mass
Explanation:
In the given scenario of the experiment, Sam is proving here the law of conservation of mass.
What is law of mass conservation?The law of conservation of mass basically implies that mass can neither be created nor be destroyed in any chemical reaction.
When coal is burned, for instance, the carbon atom altered into carbon dioxide. The carbon atom changes from a solid to a gas, but its mass remains constant.
The law of conservation of mass is a fundamental physics principle. In other words, no matter how the parts are rearranged, the mass of an object or collection of objects remains constant.
The law of conservation of mass was critical to the advancement of chemistry because it helped scientists understand that substances did not vanish as a result of a reaction, but rather transformed into another substance of equal mass.
Thus, here Sam is demonstrating law of mass conservation.
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Moonlight is really ____________ being reflected
Answer:
Sunlight being reflected
What does an organism's genotype describe?
the allele combination for a trait
the physical appearance of a trait
the number of alleles on a gene
the number of different traits inherited
Answer:
the allele combination for a trait
Explanation:
The genotype describes which alleles (versions) of a gene an organism has. Diploid organisms, such as humans, have two copies of each gene. Sometimes these alleles are the same and the individual is h0m0zygous for that gene. If they are different, the individual is heterozygous for that gene.
The physical appearance of a trait is the phenotype.
Answer:
The answer is A.
Explanation:
I don't know for sure but I will come back and tell u if it is right after my quiz...
What is a habitat?
A) an area of land
B) a community
C) a niche
D) a population
Answer:
the answer is a niche
Explanation:
The organs of vascular plants consist of layers of specialized ___.
A. Tissues
B. Organelles
C. Molecules
D. Vessels
The organs of vascular plants consist of layers of specialized tissues which are the vascular tissues. The correct answer is option A.
What are the major parts of a vascular plants ?The parts of the vascular plants are roots, stems and leaves.
Vascular tissue in the plants is just made of the two of the specialized types of the conducting tissues that are xylem that conducts water and phloem that conducts the sugars and organic compounds. A single type of the vascular bundle that always has both xylem along with the phloem tissues.
The vascular plant that is the sporophyte basically has three basic categories of the non-reproductive or vegetative organs. These are roots, stems and leaves.
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An enzyme works only with a specific substance like a
Fork and knife
Key and lock
On and off switch
A dimmer switch
Answer:
A dimmer switch
that the answer
Who did Darwin send his specimens to, back in England?
Answer:
Who did Darwin send his specimens to, back in England? Richard Owens
Explanation:
What type of new information is being used to classify organisms?
Answer:
DNA is the evidence that biologist use to identify new type of organisms
Explanation:
Taxonomy is the system biologist use to name living things
What are some reasons many people do not have enough to eat?
Answer:
Drought reducing the amount of food available, Population size, Not enough money.
Explanation:
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translation is the process by which mrna is translated into a sequence of amino acids
Answer:
Translation is the process by which mRNA is translated into a sequence of amino acids during protein synthesis.
which best describes a gene?
Answer:
Asegment of chromosomal DNA
Explanation:
A gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes. It is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person's unique physical features.
Answer:
A piece of a chromosome
Explanation:
A.P.E.X
Which nitrogen base sequence is the partner of T-C-A-G-C-A?
A-C-G-A-CIES
C-A-G-A-T-G
A-G-T-C-G-T
O T-C-A-G-C-A
Answer:
A-G-T-C-G-T
Explanation:
An easy way to remember is: car in the garage for c and g, apple in the tree for a and t.
what makes the red blood cell special, why is it special, how is it different than other cells, what is its primary function. (Minimum 5 sentences)....Please help
Answer:
not sure If I can make 5 sentences but I can help by telling you that it delivers oxygen and energy throughout the body through the bloodstream which is a given but there ya go
species of bacteria can evolve more quickly than species of mammals because bacteria have--
Answer:
higher rates of reproduction
and no back bones
Explanation:
Whats The Point Of Life?
Answer:
to enjoy it to the fullest because God put us here for a purpose
Explanation:
Answer:
this feels like philosophy not biology lol.
Explanation:
It is the moment when a mind latches onto an idea or purpose that an individual finds meaning in their life. This means that it doesn't matter who or where you are or whatever activity you might be doing – if your mind believes it has discovered the meaning of life, then that is the meaning of life for you
1)) The average depth of a lake is 10 meters. Do you think sunlight acts a limiting factor the same way it does in the ocean? Why or why not?
2)An area with a high population of crayfish in local lakes and rivers has begun experiencing acid rain, rain that has a pH of 3.0 - 4.0. Predict how this rain will impact the crayfish population.
Answer:
No.
Explanation:
No, the sunlight does not act as a limiting factor the same way it does in the ocean because the lake has lower depth as compared to ocean which is very deep i. e. more than 3000 meters where sunlight does not reach and we know that sunlight is very important for the survival of plants. Sunlight reach in the water about 1000 meters so plants can survive and do photosynthesis due to its low depth.
Acid rain will impact the crayfish population because acid rain decreases the pH of water and this lower pH causes death of the crayfish and also the food of crayfish and thus lower the population of crayfish due to unavailability of food..
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Using the table on the right as a guide, answer the following questions about light-independent reactions.
Describe the process of light-independent reactions.
What are the products of light-independent reactions?
Answer:
Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation, reduction, and regeneration.
Answer:
It uses ATP and NADPH and converts it into glucose and other carbohydrates; glucose and other carbohydrates
Explanation:
EDGE 2020
The primary producer at a deep sea vent would be
A.
spider crabs
B.
chemosynthetic bacteria
C.
tube worms
D.
photosynthetic bacteria
Answer:
spidercrabs
Explanation:
it is because they live under the sea
4. Using evidence from the text, describe the purpose of the cell membrane.
Answer:
it protects the cell from germs and stuff
Carbon Dioxide + Water + _________ → Glucose + Oxygen
wish you is missing
I think the answer you are missing is sunlight :-)