Q: What is the only substance on earth that is present in all three states of matter? Choices: - mercury - air - carbon - water A:
water

(Question)
Q: What renewable energy source converts energy from the sunlight into electricity? Choices: - geophysical energy - geothermal energy - hydrostatic energy - solar energy A:
(Answer)
solar energy

Ques: Q: What do you call an area covered with water, or possessing very soggy soil, all or part of the year? Choices: - stream - peninsula - island - wetland A:
Ans: wetland

(Q).
Q: Where are most chloroplasts found in plants? Choices: - roots - stems - flowers - leaves A:
(A).
leaves

Ques:Q: What is considered to be a unique feature of echinoderms? Choices: - oil vascular system - air vascular system - iron vascular system - water vascular system A:

Ans:water vascular system

Question: Q: What is the name of the narrow tube that begins at the stomach and ends at the large intestine? Choices: - small stomach - pancreas - small tissues - small intestine A:
Answer:
small intestine