[[Ques]]: What can mutations cause?
Options:
- (A) death and devastation
- (B) blood
- (C) massive damage
- (D) Leptospirosis
- (E) biological diversity
- (F) horses
- (G) ice
- (H) out of control growth
[[Ans]]: [Cancer cells divide more often than normal cells, and grow out of control. Cancer is an example of a mutation in cells. Mutation can cause growth out of control.]
[(H)]

[[Ques]]: Something that is primarily electrostatic in origin causes water to expand when it what?
Options:
- (A) heat
- (B) freezes
- (C) a hazard
- (D) boiling
- (E) moves
- (F) reacts
- (G) expelled
- (H) it's state
[[Ans]]: [Hydrogen bonds cause water to expand when it freezes. Hydrogen bonds Hydrogen bonds are primarily electrostatic in origin. Something that is primarily electrostatic in origin causes water to expand when it freezes.]
[(B)]

[[Ques]]: What are a source of food for many fish species?
Options:
- (A) layers of fat
- (B) bird species
- (C) human species
- (D) keystone species
- (E) Organic compounds
- (F) barnacles
- (G) gastropod shells
- (H) species of deer
[[Ans]]:
[Sponges are a source of food for many species of fish. Sponges are also keystone species. Keystone species are a source of food for many fish species.]
[(D)]