Animals that tend to have complex nervous systems are missing what?
Options:
- (A) Energy
- (B) Energy.
- (C) nervous system
- (D) Chlorophyll
- (E) backbone
- (F) alleles
- (G) abdomen
- (H) brain
--
Let's think first: Most invertebrates have a more complex nervous system. Invertebrates are animals without a backbone. Most animals without a backbone have a more complex nervous system.... So the answer is [(E)]

What kind of animals has a water vascular system with tubed feet?
Options:
- (A) animals
- (B) starfish
- (C) reeds
- (D) insects
- (E) warm-blooded
- (F) sponges
- (G) sea coral
- (H) four limbs
--
Let's think first: Echinoderms have a unique water vascular system with tube feet. Echinoderms are represented by the starfish. Starfish have a unique water vascular system with tube feet.... So the answer is [(B)]

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
--
Let's think first: Sweating reduces body heat. Sweat cools the body by evaporation, which removes heat from the body surface. Sweating cools the body by evaporation.... So the answer is [(E)]

What brings the building blocks of proteins to the ribosomes in the correct sequence?
Options:
- (A) recycling
- (B) flow of electrons
- (C) Chemical energy
- (D) it needs them
- (E) an engine
- (F) light energy
- (G) A computer
- (H) molecules of tRNA
--
Let's think first: Molecules of tRNA bring amino acids to the ribosome in the correct sequence. Amino Acids Amino acids are the building blocks of proteins. Molecules of tRNA bring the building blocks of proteins to the ribosome in the correct sequence.... So the answer is [(H)]

How do salamanders usually find sexual partners?
Options:
- (A) mouth of rivers
- (B) It helps them survive
- (C) interact
- (D) it needs them
- (E) competition
- (F) movement
- (G) sense of smell
- (H) heat produced
--
Let's think first: Most salamanders use their sense of smell to find a mate. To couple in sexual union, to be matched or mated. Most salamanders find sexual partners by their sense of smell.... So the answer is [(G)]

Where in tropical regions can you find cobra bobo?
Options:
- (A) an organism's body
- (B) more abundant
- (C) layers of fat
- (D) swamp vegetation
- (E) colder and wetter
- (F) Wet weather
- (G) in moist soil
- (H) dry conditions
--
Let's think first: Caecilians can be found in moist soil near rivers and streams in tropical regions. Cobra bobo is the local name for caecilian. Cobra bobos can be found in moist soil near rivers and streams in tropical regions.... So the answer is [(G)]