Which statement is true about fossils?

1 answer:

8 0

Fossils take several hundred thousand years to form and it is rare to find a fossil of skin (skin is usually eaten or rotted away in the first decade, so it rarely turns into a fossil).

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HELPPPPPPPP!!!! what is a mutation that a polar bear can have to help conserve energy and how do genetic mutations relate to chr

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Answer:

wings

Explanation:

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3 years ago

The area where the fresh water of a river meets the salt water of the ocean is a(n)

sashaice [31]

Is called an estuary this mostly common with rivers and oceans.

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3 years ago

On a cool October morning you dressed warmly for a 10K race sponsored by a local charity, and about half way through the race yo

Sveta_85 [38]

Answer: On a cool October morning you dressed warmly for a 10K race sponsored by a local charity, and about half way through the race you realize that you have stopped sweating in all the warm running clothes you put on and are beginning to feel faint and slightly disoriented. The most likely reason of his symptoms are that you are suffering a dehydration followed by possible hypothermia.

Explanation:

If you run dehydrated, your heart system will be struggling in poor conditions, so it will be overexposed and your heart rate will rise considerably. On the other hand, the body will not be as efficient in regulating body temperature.

Your muscles and your brain as well as the entire nervous system will not respond the same and will be demanded in conditions not suitable for your effort, therefore, the response time will fall, you may suffer cramps, headache, dizziness and even muscle spasms . If the effort is more than two hours long, you probably need more than water and you should try sports drinks also.

When running at low temperatures, a relevant factor is clothing. If we are not properly dressed to run in cold and windy conditions, we will naturally be more exposed to suffer from hypothermia. The manifestations of hypothermia are varied and include pain and tingling in the hands and feet, tremors or chills, decreased physical capacity and, in more extreme cases, alterations of consciousness.

A person who is suffering from hypothermia should wrap in dry clothes and get out of exposure to cold or wind , hydrating with warm liquids can also be useful.

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3 years ago

What ia rock? give answer

Maru [420]

A rock is a hard/solid material. Rocks are separated into different groups based off the minerals they have in them, the groups are metamorphic, igneous, and sedimentary. Rocks are formed by physical changes—such as melting, cooling, eroding, compacting, or deforming—that are part of the rock cycle.

hope this helps!

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2 years ago

If you made a Punnett square showing Gregor Mendel’s cross between true-breeding tall plants and true-breeding short plants, the

nekit [7.7K]

Answer:

Explanation:

Assume that allele A is the dominant allele that produces the dominant phenotype (tall) in plants that have at least one allele A, and allele a is the recessive allele that produces the recessive phenotype (short) in plants that have two alleles a.

In the parental generation, a true-breeding tall plant has the AA genotype (phenotype: tall), and a true-breeding short plant has the aa genotype (phenotype: short).

We have the Gregor Mendel's cross as in the image attached here.

All of the F1 generation (offspring plants) have the Aa heterozygous genotype, and therefore, they are all tall.

The answer is c (the offspring plants have a genotype that was different from that of both parents).

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3 years ago