Answer:
Cell membrane as a semi permeable membrane.
Explanation
A semi permeable membrane is the one that would only allow water,ions and certain molecules to pass through it by diffusion while restricting other large molecules from passing through.
Details in the attachment.
Physical chemists study matter and energy, and there is chemical reactions in your body, and all living things have elements, like carbon.
I would say D
The species of plankton found in sediments and their isotope ratios can show the temperature of the overlying waters when the sediments were deposited.
Answer: N-14
Explanation: When C-14 undergoes radioactive decay, atoms of N-14 are formed
