Line 1: *Immunity results from immunization. Immunization records with all required shots. Resistance to disease results from getting shots.*
*(G)*
Line 2: *What usually results from getting shots?
Options:
- (A) heat produced
- (B) susceptibility to disease
- (C) limb amputation
- (D) a lot of human deaths
- (E) death and devastation
- (F) healing
- (G) resistance to disease
- (H) confusion*

Logic of a solution: *All chemical reactions require activation energy to get started. Fire is a chemical reaction. Fire requires activation energy to get started.*
*(B)*
The original question: *What does fire require to get started?
Options:
- (A) an engine
- (B) activation energy
- (C) water
- (D) energy usage
- (E) direct energy
- (F) dogs
- (G) activated almonds
- (H) adding heat*

Line 1: *Prokaryotes are single-celled organisms that lack a nucleus. Prokaryotes are usually microscopic and bacteria is an example of a prokaryote. Bacteria are single celled organisms that do not have a nucleus.*
*(H)*
Line 2: *What are single celled organisms that do not have a nucleus?
Options:
- (A) Most plants
- (B) nucleus
- (C) ferns
- (D) fossil fuels
- (E) bushes
- (F) Eukaryotes
- (G) leech
- (H) bacteria*

Logic of a solution: *All chemical reactions require activation energy to get started. Activation energy is required to overcome the energy barrier. All chemical reactions must first overcome the energy barrier.*
*(D)*
The original question: *What must a chemical reaction overcome before starting?
Options:
- (A) PV=nRT
- (B) heat or cold
- (C) reactants
- (D) energy barrier
- (E) Dehydration
- (F) harmful substances
- (G) resistance
- (H) temperature*

Line 1: *Zooplankton are tiny animals that feed on phytoplankton. Diatoms are the predominant phytoplankton. Zooplankton are tiny animals that feed on diatoms.*
*(F)*
Line 2: *Zooplankton are tiny animals that feed on what?
Options:
- (A) sunlight
- (B) vegetation
- (C) Energy
- (D) loose soil
- (E) plant life
- (F) diatoms
- (G) fungi
- (H) chemicals*

Line 1: *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)*
Line 2:
*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*