What is one possible result of an ovary not performing its intended function in the body?

Why is it important to study each branch of earth science?

Which of these parts of the membrane large moecules pass through it ?

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons