Q: Most air masses form over what two types of regions? Choices: - arctic and marine - polar and arctic - marine and tropical - polar and tropical A:
polar and tropical

(Question)
Q: Earthworms are important deposit feeders that help form and enrich what material? Choices: - wood - shale - coal - soil A:
(Answer)
soil

Ques: Q: The general term peptide refers to an amino acid chain of what? Choices: - large length - incomplete length - small length - unspecified length A:
Ans: unspecified length

(Q).
Q: What body system consists of organs that break down food, absorb nutrients, and eliminate waste? Choices: - lymphatic system - hormonal system - skeletal system - digestive system A:
(A).
digestive system

Ques:Q: What type of behavior has the advantage of being flexible and capable of changing to suit changing conditions? Choices: - inherited behavior - noted behavior - saved behavior - learned behavior A:

Ans:learned behavior

Q: What state of matter completes the list: solid, liquid, gas? Choices: - energy - ice - power - plasma A:
plasma