Ques and Ans: Damaged dna might benefit from:
Options:
- (A) resistance
- (B) cellular repair
- (C) mutagens
- (D) UV rays
- (E) recovery
- (F) radiation
- (G) Electrical energy
- (H) flow of electrons
(B)
Explanation for the Ans above: [[Cells have multiple repair mechanisms to fix mutations in DNA. And if the damaged DNA is duplicated, it causes mutation. Cells have multiple repair mechanisms to fix damaged DNA.]]

Ques and Ans: Nematodes reproduce how?
Options:
- (A) root growth
- (B) heat or cold
- (C) pollen
- (D) electrically
- (E) sexually
- (F) seeds
- (G) survive
- (H) a cuticle
(E)
Explanation for the Ans above: [[Roundworms reproduce sexually. Nematodes are millimeter-sized roundworms. Nematodes reproduce sexually.]]

Ques and Ans: Migration increases what?
Options:
- (A) root growth
- (B) speed
- (C) distance
- (D) voltage
- (E) energy usage
- (F) Plants growth
- (G) gene flow
- (H) layers of fat
(G)
Explanation for the Ans above:
[[Gene flow occurs when individuals move into or out of a population. Internal migration describes moves within a country. Gene flow occurs when individuals migrate.]]