Answer: 21 percent
Explanation:
According to NASA, the gases in Earth's atmosphere include: Nitrogen — 78 percent. Oxygen — 21 percent. Argon — 0.93 percent.
Answer:
A is the right answer
Explanation:
The cell wall is the outermost layer of the cell. It surrounds the cell membrane and provides these cells with structural support and definite shape. It prevents the over-expansion of the cell when water enters the cell.
Can I have brainliest
Internal stimuli causes a response within an organisms body. Among the choices given only one of them is an effect because of an internal stimuli, which is a child having a fever. The internal stimuli that cause such a response could be a bacteria or virus.
If you consider the other like the chipmunk running and owl sleeping in a tree, those two are responses to predators, which are outside the body. A dog panting and snake moving to a sunny rock is a response to the temperature of their environment, which is outside the body as well.
The term used to describe an organic cofactor is that this common chemistry allow cells to use a small set of metabolic intermediates to carry chemical groups between different reactions. These group-transfer intermediates are the loosenly-bound organic cofactors, often called coenzymes.
