During fasting hours, absorption in the small intestine occurs by : a) Membranial Diffusion
b) Osmosis
c) Active Transport
d) Imbibtion

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it