Logic of a solution: *Flowers attract pollinators, and fruits encourage animals to disperse the seeds. Insect Pollinators Learn about pollination and why insect pollinators are important in the garden. Flowers attract insects.*
*(H)*
The original question: *What attracts insects?
Options:
- (A) bushes
- (B) orchids
- (C) food
- (D) animals
- (E) pollinators
- (F) seeds
- (G) pollen
- (H) flowers*

Line 1: *Immunodeficiency occurs when the immune system is not working properly. Many cancers can cause immunodeficiency. Many cancers can cause the immune system to not work properly.*
*(G)*
Line 2: *Many _ can cause the immune system to not work properly.
Options:
- (A) fever
- (B) bacteria
- (C) radiation
- (D) fungi
- (E) A drug.
- (F) Allergies
- (G) cancers
- (H) Toxicity*

Logic of a solution: *Vertebrates are all chordates that have a backbone. All chordates have jaws. Vertebrates have a jaw and a backbone.*
*(G)*
The original question: *What do all vertebrates have?
Options:
- (A) fur and fat
- (B) sensory neurons
- (C) Veins and arteries.
- (D) four limbs
- (E) jaws and scales
- (F) a slimy coat
- (G) jaw and a backbone
- (H) feathers*

Line 1: *Energy is passed up a food chain or web from lower to higher trophic levels. Animals which are consumers constitute higher trophic levels. Energy is passed up a food chain or web from producers to consumers.*
*(F)*
Line 2: *Energy is passed up the food chain or web from producers to whom?
Options:
- (A) animals
- (B) plants
- (C) glucose
- (D) our planet
- (E) chloroplasts
- (F) consumers
- (G) photosynthesizers
- (H) people*

Logic of a solution: *Vesicle transport requires energy, so it is also a form of active transport. Active transport involves movement of substances against a chemical gradient. Vesicle transport requires energy for movement of substances against a chemical gradient.*
*(C)*
The original question: *Why does vesicle transport need energy?
Options:
- (A) it helps plants in growing
- (B) to prevent movement
- (C) for movement of substances
- (D) during the day
- (E) Transfers energy
- (F) flow of electrons
- (G) to breath
- (H) magnetism*

Logic of a solution: *Air pollution harms the respiratory and circulatory systems. Air pollution is caused by lots of different pollutants. Several different pollutants harm the respiratory and circulatory systems.*
*(D)*
The original question:
*What systems are pollutants bad for?
Options:
- (A) destroying life
- (B) classification system
- (C) an organism's body
- (D) respiratory and circulatory
- (E) animal habitats
- (F) ambulatory systems
- (G) social security system
- (H) the environment*