Chain-of-thought: Roots grow in length and width from primary and secondary meristem. Kids see the underground root systems of trees and then an aerial view of plants in the city. Underground systems grow in width and length.
Q: What grow in width and length.?
Options:
- (A) crocodiles
- (B) sedimentary rocks
- (C) vegetation
- (D) remains of prehistoric life
- (E) swamp vegetation
- (F) shrub beds
- (G) underground systems
- (H) loose dirt
A: (G)
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Chain-of-thought: Macroevolution is evolution over geologic time above the level of the species. Geologists break time down into geologic time units called eras . Macroevolution is evolution over eras above the level of the species.
Q: When does macroevolution over eras occur?
Options:
- (A) relocation
- (B) colder and wetter
- (C) in a few years
- (D) permineralization
- (E) over eras of time
- (F) within a lifetime
- (G) Continents drifting
- (H) in minutes
A: (E)
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Chain-of-thought: Cells are programmed to divide only a set number of times. All ViroMed cells are passaged a limited number of times. Cells are programmed to a limited number of divides.

Q: Cells are what to a limited number of divides?
Options:
- (A) increased
- (B) standardized
- (C) warm-blooded
- (D) critical organs
- (E) forced
- (F) programmed
- (G) white
- (H) fertile
A: (F)
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