ngAnswer:On a chromosome in the nucleus sorry if im wrong
Explanation:
Its alveoli, is where gas exchange happens
Answer:
an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
Explanation:
An ion is defined as an atom or molecule that has gained or lost one or more of its valence electrons, giving it a net positive or negative electrical charge. In other words, there is an imbalance in the number of protons (positively charged particles) and electrons (negatively charged particles) in a chemical species
Answer: Scientists use what is called the Fluid Mosaic Model to describe the cell membrane's structure and function.
Explanation:
The cell membrane is selectively permeable, or "semi-permeable", meaning that the membrane only allows certain substances to enter or leave the cell.
Solid-
As a volume of air expands due to heating, the density of this air will remain the same
