Q: The earliest animals were which kind of invertebrates? Choices: - insects - mammals - dinosaurs - aquatic A:
aquatic

(Question)
Q: Copper oxide is a result of what two substances mixing? Choices: - copper and gas - metal and oxygen - crystal and oxygen - copper and oxygen A:
(Answer)
copper and oxygen

Ques: Q: What forms as a result of decomposition when n2o is heated? Choices: - ammonia and nitrogren - nitrogen and hydrogen - calcium and oxygen - nitrogen and oxygen A:
Ans: nitrogen and oxygen

(Q).
Q: Making associations between experiences is often a part of what activity? Choices: - dying - eating - sleeping - learning A:
(A).
learning

Ques:Q: By what processes does the ocean modify landforms? Choices: - splash and deposition - shape and deposition - sweeping and deposition - erosion and deposition A:

Ans:erosion and deposition

Ques: Q: What builds up in an artery and reduces blood flow? Choices: - pressure - calcium deposits - surface tension - plaque A:
Ans:
plaque