Q: The most common substance on earth, water, is primarily present in what state? Choices: - gas - solid - freshwater - liquid A:
liquid

(Question)
Q: How does the diaphragm look like when it is at rest? Choices: - flat - inverted - dam - shaped - dome-shaped A:
(Answer)
dome-shaped

Ques: Q: In which sphere of the atmosphere do the northern and southern lights occur? Choices: - lithosphere - stratosphere - ionosphere - thermosphere A:
Ans: thermosphere

(Q).
Q: In sexually reproducing organisms, parents pass a copy of each type of what to their offspring by producing gametes? Choices: - molecule - genome - phenotype - chromosome A:
(A).
chromosome

Ques:Q: An example of a variable relating to the ramp is its what? Choices: - color - mass - weight - steepness A:

Ans:steepness

Question: Q: What type of vertebrates are birds? Choices: - epidermal tetrapod - invertebrates - exothermic - endothermic tetrapod A:
Answer:
endothermic tetrapod