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:
right atrium

(Question)
Q: What is the term for rain that has a ph less than 5, due to carbon dioxide dissolving? Choices: - frozen rain - basic rain - carbon rain - acid rain A:
(Answer)
acid rain

Ques: Q: Where do stratus clouds occur in the troposphere? Choices: - mid to high region - high - mid-region - low A:
Ans: low

(Q).
Q: How many orders of magnitudes bigger is the electric force? Choices: - 36 - 45 - 33 - 39 A:
(A).
39

Ques:Q: Insect's antennae are useful for sensing what? Choices: - contaminants - microorganisms - sunlight - chemicals A:

Ans:chemicals

Q: What speeds up the reactions of chemical digestion? Choices: - protein catalysts - electrical enzymes - stomach acids - digestive enzymes A:
digestive enzymes