Ques:Q: What is the name for spherical groups of old stars held tightly together by gravity? Choices: - nebula - elliptical clusters - dark matter - globular clusters A:

Ans:globular clusters
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Ques:Q: Where are most chloroplasts found in plants? Choices: - roots - stems - flowers - leaves A:

Ans:leaves
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Ques:Q: Loss of what eventually threatens other species not impacted directly, because of their interconnectedness; as species disappear from an ecosystem others are threatened by changes in available resources? Choices: - technology - oxygen - climate - biodiversity A:

Ans:biodiversity
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Ques:Q: Wave amplitude of a transverse wave is the difference in height between what and the resting position? Choices: - a valley - a cascade - a magnitude - a crest A:

Ans:
a crest
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