You are presented with the quiz "Completing a circuit causes fan's blades to what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "completing a circuit causes electricity to flow through that circuit" and "electricity flows through an electric motor in a fan, causing the fan's blades to turn". So, what's the best answer to the question?

OPTIONS:
- break
- cycles
- disappear
- bend
- behave
- Rise
- energy
- turn

Answer: turn

You are presented with the quiz "Which body system releases chemical messengers that control many body functions?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "hormones are chemical messengers that control many body functions" and "hormones are produced and released by the endocrine system ". So, what's the best answer to the question?

OPTIONS:
- athletes
- acetic acid
- sweating
- Endocrine system
- heat or cold
- Electrical energy
- Veins and arteries.
- sensory neurons

Answer: Endocrine system

You are presented with the quiz "What has positive impacts on a person's health?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "rest has a positive impact on a health" and "aids sleep and rest". So, what's the best answer to the question?

OPTIONS:
- stamina
- sleep
- working too hard
- food
- animals
- playing in the dirt
- running
- eating too much

Answer: sleep

You are presented with the quiz "What decreases stamina?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "smoking tobacco decreases stamina" and "tobacco is smoked in pipes or in cigarettes or bidis". So, what's the best answer to the question?

OPTIONS:
- cleaning pipes
- liver cancer
- viruses
- smoking meat
- smoking pipes
- smoking volcanoes
- Dehydration
- harmful substances

Answer:
smoking pipes