Q: What substances affect the brain and influence how a person feels, thinks, or acts? Choices: - H2 blockers - primeval drugs or drugs - amphetamines - psychoactive drugs or drugs A:
psychoactive drugs or drugs

(Question)
Q: What supports the scapula, transmits the weight and forces from the upper limb to the body trunk, and protects the underlying nerves and blood vessels? Choices: - bladder - pelvis - cranium - clavicle A:
(Answer)
clavicle

Ques: Q: Methyl groups are found within what? Choices: - rna acids - DNA molecules - peptide chains - amino acids A:
Ans: amino acids

(Q).
Q: What gets released into the atmosphere when fossil fuels are burned? Choices: - oxygen - hydrogen - chemical dioxide - carbon dioxide A:
(A).
carbon dioxide

Ques:Q: Which common element is the most found in living organisms? Choices: - hydrogen - oxygen - monoxide - carbon A:

Ans:carbon

Q: Studies have shown that not only does reproduction have a cost as far as how long male fruit flies live, but also fruit flies that have already mated several times have limited amounts of this? Choices: - dna - eggs - chromosomes - sperm A:
sperm