I think it’s all of the above.
Changing the environment would mean that traits are going to me favored, but that also means that niches also open up as a result.
I hope that helps.
Ionic bonds result when electrons are tranfered between atoms. Covalent bonds result when valence electrons are shared between atoms. You should be able to identify whether an ionic or covalent bond is being formed between atoms.
Should be prophase because chromatin coils up, becoming shorter and thicker, thick enough to become visible when stained.
Answer:
We are made of primitive cells
