Answer:
C
Explanation:
Every living thing is made up from cells, as they are the smallest unit of a living thing.
Answer:
Layer A is the crust and Layer B is the mantle.
I think Oxygen is the best answer.
Answer & explanation:
The cell was discovered in 1669 by the English scientist Robert Hooke when looking at a piece of tissue in a two-lens microscope. Hooke was able to visualize small cavities in the experiment piece, then naming such cell cavities.
Only a century and a half after the discovery of the cell, that the Cell Theory was launched, replacing the theory of spontaneous generation (or abiogenesis).
Before that, many scientists were already busy understanding the structure and functioning of the cell, generating knowledge that became fundamental to the development of biology, specifically cytology, a branch of science that studies the structure, functions and development of cells.
What molecule??
I'm assuming the answer would be by diffusion.
