Answer:
Once an organism is beyond a certain size, it cannot get essential molecules into and out of cells solely by diffusion. Diffusion is limited by the surface area to volume ratio of the organism.
Answer:
D. The sympathetic system prepares the body for stress and activity and the parasympathetic system prepares the body for rest.
Explanation:
- Sympathetic and Parasympathetic nervous system are two divisions of autonomic nervous system.
- Acetylcholine is a common neurotransmitter released by preganglionic neurons of both systems.
- The post Ganglionic neurons of these two systems release different neurotransmitter.
- The sympathetic nervous system is concerned with 'fight and flight response'
- The parasympathetic nervous system is concerned with 'rest and digest ' response.
I am pretty sure that planet A will move faster and i know it will have a smaller orbit then planet B
Answer:
The correct answer is option A
A. A marine body fish
Explanation: this is because they need to retain water. The piscine kidney cannot afford to produce a urine of higher concentration than the fluids in the body so production is kept at minimum.
