Answer:
D
Explanation:
It can't be A as nuclei must be positive.
It can't be B as nuclei must contain at least one proton, and no electrons.
Technically C may be true, but the question is asking about the nucleus. Not the electron cloud. Electrons aren't found in the nucleus. Only protons and neutrons.
I'm not sure but I'd say A. Myofibril
*cross fingers*
Answer:
The fossil record helps paleontologists, archaeologists, and geologists place important events and species in the appropriate geologic era.
Explanation:
It is based on the Law of Superposition which states that in undisturbed rock sequences the bottom layers are older than the top layers.
The answer is melanin.
Mark me brainliest!
Answer:
OXYGEN
Explanation:
HMMM BECAUSE IT IS THE THING THAT MAKE US ALIVE
