Not to be concerned as long as the diet as a whole provides average amounts
We need blood because it carries oxygen and helps us sustain life. The organ that pushes blood through the body is the heart.
I think its called an Axon.
The correct answer is 'If molecules are small enough, then they can pass through the semipermeable membrane because they can cross the semipermeable membrane from their small pores or openings'.
The semipermeable membrane is permeable to few molecules, and the smaller molecules pass through the molecules from small pores present in the semipermeable membrane. The size of the big molecules are large, so, they cannot cross through semipermeable membrane.
The feedback loops communicate with the body to ensure homeostasis.
Answer is A. Feedback Loops
It will help you
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