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Vinvika [58]
3 years ago
10

(02.03 HC) Explain how science uses fossil evidence to support the theory of evolution.

Biology
1 answer:
nevsk [136]3 years ago
8 0
The fossil record shows a sequence from simple bacteria to more complicated organisms through time, it is very reliable because it is physical evidence and by studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.
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Jonas Salk was awarded the Nobel Prize for discovering a way to vaccinate against
Bogdan [553]

Answer:

Jonas Salk was awarded the Nobel Prize for discovering a way to vaccinate against  polio in the United States in the 1950's. This allowed millions of school-age children to  avoid crippling disease, and to swim during summer again, as polio was often spread in public swimming areas before.

The statement that best describes how the polio vaccine works is:

It triggers the immune system to produce antobodies to fight the disease-causing agent.

Explanation:

There are two main reasons for this answer. The first one is that every vaccine is aimed to introduce a controlled amount of antigenes to be accepted by the organism. These antigens are made after some studies were conducted in a lab and were obtained from substances that the human body can accept to train the immune system to develop an effective defense for the virus or bacteria on the matter. In our case, the polio vaccine works the same way and allowed to save many lives.

3 0
3 years ago
What are the chances a<br> heterozygote passes on<br> either a dominant or<br> recessive allele?
melisa1 [442]

Answer:

A parent with one copy of a dominant allele and one recessive coded Ww for the widow's peak  is called heterozygous for a trait and has a 50 percent chance of passing on the dominant allele to each of his or her offspring, regardless of the gene inherited from the other parent.

Explanation:

hope this helps in some way sorry if it does not

5 0
3 years ago
A woman has two recessive alleles. What is her phenotype? (1 point)
Serjik [45]

Answer:

XX

Explanation:

A women's phenotype will always stay the same as XX.

7 0
3 years ago
The stage of the cell cycle that occupies most of the cell's life is
Scorpion4ik [409]
This is called the G1 phase I'm sure. 
3 0
3 years ago
What happens during radioactive decay, and what is the result at the end of radioactive decay
natulia [17]
Radioactive decay occurs when an atom has either to many or to few neutrons and becomes unstable and start to emit radio active radioactive radiation and the atom start to decompose.

At the end two things can happen either the atom will transform in a new element with a lower atomic # and atomic mass # or the remaining neutron will transform into an electron and be on its own way
4 0
3 years ago
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