The heart must beat faster during exersise because by increasing the heart rate the body is able to increase cardiac output and deliver the necessary blood flow to the mucles
Answer:
<h2>starch: polysaccharide is the answer</h2>
Explanation:
<h3>mark me a brainliest tysm</h3>
Answer:
Sorry if I get it wrong but I think
A: Nucleus
B: Cytoplasm
C:Ribosomes
D:DNA
E:Cell membrain
Explanation:
Psychic stimulants include caffeine, cocaine, and various amphetamines. These drugs are used to enhance mental alertness and reduce drowsiness and fatigue.