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IgorC [24]
3 years ago
7

Atoms can have different numbers of which of the following electrons, protons neutrons or all of the above

Biology
1 answer:
OLEGan [10]3 years ago
7 0
Atoms may have different numbers of neutrons. Atoms are the smallest fraction of an element that can exist, and still show the properties of the element. They consists of electrons (negatively charged), protons (positively charged), and neutrons (no charge). The number of electrons is equivalent to the number of protons normally however an atom may loose or pick up electrons and  have a positive charge or negative charge. The number of neutrons in the nucleus may vary within a given element to give varieties of atoms we call isotopes. 
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Distinguish between directional, stabilizing, and disruptive selection. Give examples.
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Disruptive selection is a type of natural selection that shows a preference toward the reproduction of genetic material at the extremes within a population.One of the most studied examples of disruptive selection is the case of ​London's peppered moths.
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5 0
3 years ago
ANSWER WILL GIVE BRAINLIEST
hoa [83]

Answer:

B each new layer has a new bit of the story to tell and you can see sequential time with each strata

A. 1. Embryological development is very similar for many animals so it would differ a lot from the DNA.

2. embryological evidence is a poor substitute for DNA evidence because of it's almost universal progression. It would be more difficult to see difference in embryos vs via DNA

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C. Relative dating is used to determine a fossils approximate age by comparing it to similar rocks and fossils of known ages. Absolute dating is used to determine a precise age of a fossil by using radiometric dating to measure the decay of isotopes, either within the fossil or more often the rocks associated with it.

Explanation:

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3 years ago
The highly specialized blood cell whose function is oxygen transportation is
spayn [35]
A red blood cell's function is to  transport oxygen.
5 0
3 years ago
Hello, please help, see attached photo :) thanks
Dmitry [639]

Answer:

a. Parents AA x Aa

b.

                     A               A

A                   AA             AA

a                   Aa              Aa

c. 50%

Explanation:

a. Parents AA x Aa

b.

                     A               A

A                   AA             AA

a                   Aa              Aa

c. 50%

5 0
2 years ago
A zebra cell is just about to replicate its DNA. Which of the following will happen first?
Rom4ik [11]
C.) T<span>he DNA unravels to make two strands </span>
4 0
3 years ago
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