You are presented with the quiz "Temperature changing can cause what to change to ice?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "temperature changing can cause phase changes" and "when water goes through the cold induced phase change to produce ice, the ice expands". So, what's the best answer to the question?
OPTIONS:
- glass
- basalt
- skin
- heat
- diamond
- water
- Joules
- sweat

Answer: water

You are presented with the quiz "What filters blood?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "nephrons are the structural and functional units of the kidneys" and "blood is filtered in the kidney". So, what's the best answer to the question?
OPTIONS:
- nephrons
- capillaries
- mechanical
- four limbs
- animals
- organ
- sunlight
- mollusks

Answer: nephrons

You are presented with the quiz "What gland helps regulate the metabolic rate in the body?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "tRH stimulates the pituitary gland to produce thyroid-stimulating hormone, or TSH" and "thyroid hormones regulate the metabolic rate in the body". So, what's the best answer to the question?
OPTIONS:
- dehydration
- Veins and arteries.
- Prostate glands
- H2O glands
- Pituitary gland
- pancreas
- sweating
- Anal scent glands

Answer:
Pituitary gland