Sweat cools the body when it
Options:
- (A) Movement of an air mass
- (B) dry conditions
- (C) heat produced
- (D) Decreased precipitation
- (E) hydration
- (F) It expands
- (G) the environment
- (H) turns into a gas
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Let's think first: Sweat wets the skin, and when it evaporates, it cools the body. Evaporation is when a liquid turns into a gas. Sweat cools the body when it turns into a gas.... So the answer is [(H)]

How are plant cells around the vascular tissue created?
Options:
- (A) meiosis
- (B) metastasis
- (C) haleotosis
- (D) vegetation
- (E) shrub beds
- (F) made
- (G) homogenous
- (H) mitosis
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Let's think first: Secondary meristem is located within and around the vascular tissues. Plant cell types rise by mitosis from a meristem . Plant cells around the vascular tissues are created by mitosis.... So the answer is [(H)]

What has a centralized nervous system with a brain?
Options:
- (A) Man
- (B) Birds
- (C) leeches
- (D) shark
- (E) evergreens
- (F) salmon
- (G) worms
- (H) pan
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Let's think first: Fish have a centralized nervous system with a brain. Sharks are a type of fish. Sharks have a centralized nervous system with a brain.... So the answer is [(D)]

How do male dogs mark their territory?
Options:
- (A) Chemical energy
- (B) Hot dog eating contest
- (C) Adequate signage
- (D) with their fur
- (E) Scent marker
- (F) heat produced
- (G) mate with females
- (H) Paint
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Let's think first: Male dogs use pheromones in urine to mark their territory. During Urination Dog's urine is used as a scent marker for other dogs. Male dogs mark their territory with a scent marker.... So the answer is [(E)]

What is required before a chemical change?
Options:
- (A) kinetic energy
- (B) energy usage
- (C) activation push
- (D) activation energy
- (E) activation switch
- (F) activation power
- (G) Burning fuel and air
- (H) Evaporation
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Let's think first: All chemical reactions require activation energy to get started. Chemical changes are a result of chemical reactions. Activation energy must be used before a chemical change happens.... So the answer is [(D)]

What does a pregnanct woman pass on to the fetus?
Options:
- (A) Leptospirosis
- (B) Energy.
- (C) antibodies
- (D) education
- (E) embryo
- (F) parasites
- (G) zygotes
- (H) fever
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Let's think first: Passive immunity lasts only as long as the antibodies survive in body fluids. Immunization in a pregnant woman produces both active and passive immunity in the fetus. A pregnant woman will pass antibodies to the fetus.... So the answer is [(C)]