pleaseee help ASAPPP​

Answer:

geologists use rock samples and direct evidence to prove what earth's structure is like.

Explanation:

Answer:

We cannot answer without a picture or description..

Explanation:

Pakicetus is an extinct genus of amphibious cetacean of the family Pakicetidae, which was endemic to Pakistan during the Eocene, about 56 to 41 million years ago.

Answer:  Was found 50 million years ago during the Early Eocene Period. It was found in 1983.

Explanation:

Hope this helps

Answer:

D

Sieve tube element, because it has openings that allow materials to pass through its end walls.

Answer:

D. Sieve tube element, because it has openings that allow minerals to pass through its end walls

Explanation:

I'm taking the test right now, I hope this helps

Answer:

this is the ans

Explanation:

first we have to write formula of area of square is

[tex]l {}^{2} [/tex]

Answer:

i believe it would be hydroeletric because it is above sea level and wouldnt get water.

Answer:

answer is on the pic

Explanation:

may be this is helpful!

Answer:

SALT WATER DENSITY

LAYERS OF THE OCEAN

SHARK BUOYANCY

HOW WHALES STAY WARM

TIDE POOL

WATER/SHORELINE EROSION

OCEAN BOTTLE

CORNMEAL CURRENTS

DEEP-WATER CURRENTS

PENGUIN CAMO

Explanation:

Answer:

stabilizing selection

Answer:

The right answer is the third statement.

--> A double helix with bases inside the helix.

This indicated that DNA was a double helix, with bases inside the helix. The correct option is c.

Watson and Crick theorized that DNA is a double helix made up of two long helical strands twisted together.

In "Genetic Implications," Watson and Crick postulate that the replication of deoxyribonucleic acid, or DNA, may have a structural foundation. Scientists had just recently concluded that DNA contained genes, which were known to contain information that dictated an organism's identity when Watson and Crick proposed their theory of DNA replication.

In their model, each DNA strand was made up of discrete elements called bases, and the bases on one DNA strand matched the bases on the other.

Therefore, the correct option is c. a double helix with bases inside the helix.

To learn more about the DNA model, refer to the link:

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Answer:

A

Explanation:

The correct answer would be that Watson and Crick's structure of DNA was not done until 1953.

The fact that chromosomes are condensed together in the nucleus, are not distinguishable during interphase, and a method had not yet been devised to halt mitosis at metaphase could have plausibly delayed the successful counting of human chromosomes.

On the other hand, the discovery of the structure of the DNA could not have delayed the study of chromosomes because the DNA structure has no bearing on the karyotyping of chromosomes.

The chromosomes of organisms are best studied using a relevant microscope during metaphase when they would have fully decondensed and align at the equator of the cell or the metaphase plate. At the interphase phase of the cell cycle, chromosomes are full condensed under the view of the microscope.

The correct option is, therefore, A.

Answer:

solar system

Explanation:

Answer:

Mostly glucose

Explanation:

Answer:

Different Cell Types Require Different Fuel Molecules. Red blood cells rely on glucose for energy and convert glucose to lactate. The brain uses glucose and ketone bodies for energy. Muscle cells use fatty acids, glucose, and amino acids as energy sources.

Answer:

i dont understand??????

Explanation:

Answer:

What??

Explanation:

This makes no sense to me...

Answer:

celluar wall

Explanation:

im prob wrong btw

Answer:

Mutation

Explanation:

Mutation is any alteration or change in the genetic sequence of a gene caused by mutagens (substances) or mistakes during replication of genetic sequences.

A mutation occurs in the gene from time to time, although, the cell has protocols in place to put them under control if they occur. However, when DNA or a gene is being copied and transferred to offsprings, there is bound for mistakes called MUTATION to occur.

Answer:

Pretty sure its b.

Explanation:

Answer: 20. A 21. B 22. A=2, B=3 23. A=4, B=3 25. B

Explanation: A has H2O (water). B has a hydrogen ion, so acidic.

In B H2CO3 is carbonic acid

The loss of hydrogen atoms leads to the formation of acids and the hydroxide forms bases. Equation A represents the formation of water, and equation B shows the acidic solution.

Chemical reactions are said to be involved in producing products from the reactants that undergo chemical changes. Water is formed by reacting the four hydrogens and one oxygen molecule as:

2H₂ + O₂ → 2H₂O

H₂CO₃ → H⁺ + HCO₃

Here, carbonic acid dissociates a proton that makes the solution acidic.

Therefore, the first equation represents the formation of water by oxygen and hydrogen atoms.

Learn more about a chemical reactions, here:

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Answer:

DNA can be made into mRNA

Explanation:

Answer: 1. The nitrogen cycle is a biogeochemical cycle.

2. The carbon cycle is a biogeochemical cycle.

Explanation:

1. The nitrogen cycle can be defined as the biogeochemical cycle in which the atmospheric nitrogen is utilized by the plants which is fixed by the soil bacteria. The nitrogen becomes the part of the biosphere as plants utilize it as an important development mineral. The nitrogen cycle involves the nitrogen fixation in which plants fix nitrogen by the help of bacteria into ammonia, nitrification in which the ammonia is converted into nitrite, nitrogen assimilation in which the plants assimilate and utilize the nitrogen for their growth and development, and denitrification involves the reduction of nitrite into atmospheric nitrogen. The conversion of nitrogen is carried out via physical and biological processes.

2. The carbon cycle involves the atmospheric carbon dioxide being circulated in plants as they utilize it for photosynthesis. The carbon dioxide is fixed by the plants in the form of carbohydrate which is consumed by the animals and on decomposition of plants and animals dead matter release carbon dioxide gas to the atmosphere. This allows the recycling of the carbon dioxide gas in the environment.

Answer:

when people recycle they really just need to pickup after themselves

Answer:

cleaning up after yourself, learning the proper way to decompose of things, throw trash out and recycle plastic by picking it up, clean up cans, and tell others to help out!

Answer:

The length of daylight and nighttime would decrease.

Explanation:

If 24 hours was decreased to 20, it would shorten night and day time.

Answer: shivering; oxygen

Explanation:

The thyroid hormones are produced by the thyroid glands and they're the triiodothyronine and the thyroxine. The thyroid hormones are required in metabolism regulation, performs digestive functions, controls the muscle of the heart, and develops the brain.

If thyroid hormones are not released, you can regulate body temperature by shivering and which requires a greater use of oxygen.

The given question is incomplete as it lack the options, however, answer can be given by the provided information.

Answer:

The correct answer is - 3:1 ratio.

Explanation:

In the question it is given that both male and female both are heterozygous for the trait, let assume dominant allele A and recessive allele a so the the gene for the both male and female is Aa.

Punnett square for the cross between both:

gametes: A, a and A, a.

A a

A AA Aa

a Aa aa

here two out of four are heterozygous dominant and one is dominant and one is recessive.

thus, 3 out of 4 are dominant and one out 4 are recessive.

thus, the answer is 3:1 ratio

Answer:

For the 4th time I need more points and its C

Explanation: