You are presented with the quiz "What eliminates wastes and excess water?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "excretion is the process of removing wastes and excess water from the body" and "excretion refers to the processes by which the body eliminates a drug". So, what's the best answer to the question?

OPTIONS:
- recycling
- hydration
- evaporation
- loose soil
- bacteria
- the body
- Exfoliation
- Cooking

Answer: the body

You are presented with the quiz "What happens when an animal perspires?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if an animal sweats then that animal 's bodily water decreases" and "sweat and perspiration are an annoyance with glasses". So, what's the best answer to the question?

OPTIONS:
- it takes in more water
- Generating heat
- its bodily water increases
- heat is produced
- To keep their body heat.
- It becomes dormant
- its bodily water remains
- it's bodily water decreases

Answer: it's bodily water decreases

You are presented with the quiz "If a planet cannot sustain life, then the planet may be too close to what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if a planet becomes too hot then that planet cannot sustain life" and "if a planet is too close to a star, then it will be too hot for liquid water to exist". So, what's the best answer to the question?

OPTIONS:
- a ship
- Sun
- sunlight
- earth
- a crater
- an object
- a moon
- a star

Answer: a star

You are presented with the quiz "What has a positive impact on an animal's survival?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "better senses have a positive impact on an animal 's survival" and "dolphins have an additional sense called echolocation". So, what's the best answer to the question?

OPTIONS:
- human hunting
- echolocation
- peachleaf willow
- a lack of human aid
- four limbs
- a band aid
- sensory neurons
- genetic diversity

Answer:
echolocation