Q: What substance, involved in most biochemical reactions, is essential to life? Choices: - carbon - nitrogen - air - water A:
water

(Question)
Q: What part of the heart receives the blood is pumped from veins of the systemic circuit? Choices: - left atrium - left ventricle - right ventricle - right atrium A:
(Answer)
right atrium

Ques: Q: What are some of the giant fairy rings produced by? Choices: - fronds - algae - sporangia - mycelia A:
Ans: mycelia

(Q).
Q: Nonflowering vascular plants have how many basic types of leaves? Choices: - four - one - five - three A:
(A).
three

Ques:Q: Organic chemistry is the study of the chemistry of what? Choices: - hydrogen - metals - oxidation - carbon compounds A:

Ans:carbon compounds

Ques: Q: What protects the scalp from ultraviolet light exposure and loss of body heat? Choices: - ground hair - temporal hair - receding hair - head hair A:
Ans:
head hair