Q: Eutrophication, or high levels of nutrients, can cause conditions that deprive fish of what vital gas? Choices: - dioxide - hydrogen - nitrogen - oxygen A:
oxygen

(Question)
Q: Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and what else? Choices: - gravity - temperature - energy - time A:
(Answer)
time

Ques: Q: What are biochemical compounds, such as fats and oils, that consist of fatty acids and store energy? Choices: - proteins - oils - tissues - lipids A:
Ans: lipids

(Q).
Q: What is the diversity of living things called? Choices: - degradation - life cycle - ecosystem - biodiversity A:
(A).
biodiversity

Ques:Q: What are the three main types of rocks? Choices: - limestone , igneous and metamorphic - plutonic, igneous and metmorphic - crystalline , igneous and metamorphic - sedimentary, igneous and metamorphic A:

Ans:sedimentary, igneous and metamorphic

Ques:Q: What is an electrically neutral compound with positive and negative ions? Choices: - correlated compound - isotope - neutralized molecule - ionic compound A:

Ans:
ionic compound