For the last question it's either C or D.
Answer:
Have different numbers of neutrons
Explanation:
Isotopes of an element have different atomic numbers because thy differ in neutron number even though proton number remains the same across the isotopes. The mass number is the summation of the proton and neutron number. Phosphorus has approximately 23 isotopes whose mass number range between 25 and 47. Only ³¹P is stable.
Answer:
I think its cell membranes
Please correct me if I am wrong thank you
Explanation:
<span>If a population of medium sized rodents is placed under a selective pressure that yields both very large and very small individuals it was most likely directional selection. I hope that this is the answer that you were looking for and it has actually come to your desired help.</span>
