Answer:
A. active transport
Explanation:
active transport is the movement of a substance across a membrane against its concentration gradient.
hope it helps you
Answer:
B
Explanation:
as it clearly shows on the graph
The energy pyramid describes decomposers compared to energy lost as heat. Primary producers start at 100% and it decreases to 10% at primary consumers, 1% at secondary, .1% at third level, and .01% at apex.
The biomass pyramid describes the total mass of an organism and as a biomass moves up, the overall mass is losing volume. This means it decreases as it moves from the bottom to the top.
Answer:
Kidney
Explanation:
The kidney is the body system that regulates the acid base balance of the blood.
