Answer:
Explanation: both prokaryotes and eukaryotes contain cell membrane
D. The octupus population would decrease.
This is because if more sharks were in the ecosystem than they would feed on more octopus, decreasing the population of them.
The circulatory system - hemoglobin in the blood transports oxygen :)
Answer:
Biosphere
Explanation:
It is not the atmosphere, because the atmosphere is made up of air. It is the biosphere because it is a plant.
Biological structures like DNA, proteins and cells all depend on molecules. ... Neurotransmitters like epinephrine are pretty simple molecules, but without them our nervous system couldn't work. Oxygen, containing just two oxygen atoms, is a very simple molecule, and it is certainly essential to living things.
