Q: You are presented with the quiz "What are generally adapted for devouring bugs in the garden?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "bird beaks are generally adapted for the food they eat" and "after all, many birds eat bugs that devour plants in the garden". So, what's the best answer to the question?

OPTIONS:
- bird feet
- bird beaks
- bird eyes
- burrs
- insects
- bird talons
- alpacas
- warm-blooded

A: bird beaks

Q: You are presented with the quiz "what is regulated by breathing?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "blood pH may become unbalanced if the rate of breathing is too fast or too slow" and "breathing is regulated to keep as normal as possible arterial blood pH and PO2". So, what's the best answer to the question?

OPTIONS:
- thirst
- air pressure
- blood flow
- body water
- Energy
- Chemical energy
- Decibels
- kinetic energy

A: blood flow

Q: You are presented with the quiz "What causes night on a planet?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aplanet rotating causes cycles of day and night on that planet" and "rotation determines day and night, and the length of the day". So, what's the best answer to the question?

OPTIONS:
- clouds
- speed
- Winter
- rotation
- Solar energy
- axis
- heat energy
- wind

A: rotation

Q: You are presented with the quiz "Biodiversity increases the productivity and stability of what?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "biodiversity increases the productivity and stability of ecosystems" and "oceans are one of the largest ecosystems in the world". So, what's the best answer to the question?

OPTIONS:
- ferns
- fungi
- animals
- bushes
- trees
- wetland
- oceans
- plants

A:
oceans