Q: Which system in the human body consists of the heart, a network of blood vessels, and blood? Choices: - cardiac system - nervous system - circulatory system - cardiovascular system A:
cardiovascular system

(Question)
Q: What is the process of getting oxygen into the body & releasing carbon dioxide called? Choices: - perspiration - precipitation - photosynthesis - respiration A:
(Answer)
respiration

Ques: Q: Cancer occurs most often in adults over what age? Choices: - twenty - thirty - seventy - fifty A:
Ans: fifty

(Q).
Q: What do halogens require electrons to achieve? Choices: - coupling - formation - fusion - octet A:
(A).
octet

Ques:Q: Metals are good conductors of what? Choices: - light - metabolism - sound - electricity A:

Ans:electricity

Ques:Q: Long-term storage of what element occurs when matter from living organisms is buried deep underground and becomes fossilized? Choices: - oxygen - Nitrogen - hydrogen - carbon A:

Ans:
carbon