Logic of a solution: *Bottleneck effect occurs when a population suddenly gets much smaller. Population size is the predictor of extinction probability. Bottleneck effect can be a precursor to extinction.*
*(H)*
The original question: *Bottleneck effect can be a precursor to what?
Options:
- (A) massive damage
- (B) Climate change
- (C) Destroy bridges
- (D) Cambrian explosion
- (E) ground to shake
- (F) clams
- (G) soda
- (H) extinction*

Line 1: *Immunity results from immunization. Immunization with vaccine is effective. The ability of an organism to not be susceptible to a certain disease can result from vaccines.*
*(E)*
Line 2: *What can vaccines do?
Options:
- (A) cause euphoria
- (B) major threat to health
- (C) it protects them
- (D) protect plants
- (E) Keep someone from disease
- (F) cause a disease
- (G) cause a vasectomy
- (H) rapid expansion*

Logic of a solution: *Energy enters ecosystems in the form of sunlight or chemical compounds. Biomes are global ecosystems. Energy enters biomes in the form of sunlight or chemical compounds.*
*(A)*
The original question: *Energy enters what in the form of sunlight or chemical compounds.
Options:
- (A) biomes
- (B) fire
- (C) light
- (D) Energy.
- (E) Energy
- (F) LEDs
- (G) propagate
- (H) photons*

Line 1: *Vesicle transport requires energy, so it is also a form of active transport. Synaptic vesicles glutamate transporter 5. Glutamate transport requires energy.*
*(D)*
Line 2: *Glutamate transport requires what?
Options:
- (A) chemicals
- (B) flavoring
- (C) glucose
- (D) energy
- (E) MSG
- (F) Energy.
- (G) chop sui
- (H) oxygen*

Logic of a solution: *Viruses are usually considered to be nonliving. All matter, living and nonliving, is made up of atoms. Viruses are made up of atoms.*
*(F)*
The original question: *Atoms make up many things, like what?
Options:
- (A) glass
- (B) matter
- (C) A computer
- (D) Fuel cells
- (E) copper
- (F) viruses
- (G) Light
- (H) Energy*

Logic of a solution: *Soil can be depleted of nutrients. Dirt is really misplaced soil. Dirt can be depleted of nutrients.*
*(F)*
The original question:
*When gardening what can be depleted of nutrients?
Options:
- (A) fertilizer
- (B) bacteria
- (C) the plant
- (D) coal
- (E) pine
- (F) the dirt
- (G) Acids
- (H) water*