Ques and Ans: What is the process of breaking down food proteins into energy or heat?
Options:
- (A) dissecting
- (B) dehydration
- (C) elimination
- (D) energy
- (E) digestion
- (F) Cooking
- (G) calorie retention
- (H) Evaporation
(E)
Logic chain: Digestion is the process of breaking down food into components the body can absorb. Food proteins are changed into energy or heat to be used or absorbed by the body. Digestion is the process of breaking down food proteins into energy or heat.

Ques and Ans: What has a special excretory structure?
Options:
- (A) Silk plants.
- (B) Insects.
- (C) a fish
- (D) animals
- (E) plants
- (F) Architecture structures.
- (G) barnacles
- (H) Corset structure.
(B)
Logic chain: Some arthropods have special excretory structures. All insects are arthropods. Insects have special excretory structures.

Ques and Ans: How does sweating cool the body?
Options:
- (A) Riding a bike
- (B) all liquids
- (C) layers of fat
- (D) staying warm
- (E) evaporation
- (F) Animal survival
- (G) matter vibrating
- (H) hydration
(E)
Logic chain: Sweating reduces body heat. Sweat cools the body by evaporation, which removes heat from the body surface. Sweating cools the body by evaporation.

Ques and Ans: Tumors are a collection of cancer what?
Options:
- (A) harmful
- (B) mutations
- (C) cells
- (D) toxins
- (E) three
- (F) Mass
- (G) oncogenes
- (H) ovaries
(C)
Logic chain:
Cancer cells divide more often than normal cells, and grow out of control. Cancer cells, however, grow out of control and develop into a tumor. Cancer cells divide more often than normal cells, and often develop into tumors.