What helps cells take up sugar from the blood in the body?
Options:
- (A) exercise
- (B) sugar
- (C) Energy
- (D) Energy.
- (E) bones
- (F) pancreas
- (G) insulin
- (H) blood cells
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Let's think first: Insulin helps cells take up glucose from the blood. For instance, glucose is a sugar. Insulin helps cells take up sugar from the blood.... So the answer is [(G)]

Escaping poor weather and food supply changes what?
Options:
- (A) population age
- (B) the environment
- (C) population education
- (D) general preferences
- (E) important habitats
- (F) population size
- (G) movement
- (H) an organism's body
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Let's think first: Migration is a type of movement that changes population size. Birds migrate to escape poor weather and food supply. Escaping poor weather and food supply changes population size.... So the answer is [(F)]

Some aviary species fly and others swim but, all endothermic tetrapod vertebrates share what trait?
Options:
- (A) warm-blooded
- (B) Weight
- (C) fur and fat
- (D) sweating
- (E) Epidermis
- (F) feathers
- (G) retina
- (H) four limbs
--
Let's think first: Birds are endothermic tetrapod vertebrates. Some birds fly and some birds swim, but all birds have feathers. Some aviary species fly and others swim but, all are endothermic tetrapod vertebrates.... So the answer is [(F)]

What does bone provide protection for in humans?
Options:
- (A) epidermal
- (B) during the day
- (C) fur and fat
- (D) health
- (E) layers of fat
- (F) staying warm
- (G) The heart.
- (H) When it's cold
--
Let's think first: Bone provides protection for soft tissues and internal organs. For the heart is the chief organ of the body and rules it. Bone provides protection for the heart.... So the answer is [(G)]

What uses semiochemicals in urine to mark territory?
Options:
- (A) koalas
- (B) bacteria
- (C) humans
- (D) dogs
- (E) bears
- (F) cats
- (G) the Sun
- (H) rabbit
--
Let's think first: Male dogs use pheromones in urine to mark their territory. Pheromones are a sub-category of semiochemicals. Male dogs use semiochemicals in urine to mark their territory.... So the answer is [(D)]

The depletion of what results in higher levels of uv radiation reaching earth?
Options:
- (A) O3
- (B) O2
- (C) oil
- (D) pan
- (E) h2o
- (F) CO2
- (G) DNA
- (H) DDT
--
Let's think first: Ozone depletion results in higher levels of UV radiation reaching Earth. Ozone is represented chemically as O3. O3 depletion results in higher levels of UV radiation reaching Earth.... So the answer is [(A)]