You are presented with the quiz "How do roundworms have offspring?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "roundworms reproduce sexually" and "nearly all species of roundworms reproduce by laying eggs". So, what's the best answer to the question?

OPTIONS:
- more abundant
- rapid expansion
- Plants growth
- survive
- laying eggs
- competition
- it needs them
- fertile

Answer: laying eggs

You are presented with the quiz "what does a windmill primarily use to convert wind energy into electricty?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "awindmill converts wind energy into electricity primarily by using mechanical energy" and "mechanical energy is the energy of moving objects". So, what's the best answer to the question?

OPTIONS:
- matter vibrating
- stored energy
- solar power
- batteries
- Movement of an air mass
- heat is produced
- energy of moving objects
- Something to move

Answer: energy of moving objects

You are presented with the quiz "What occurs over geologic time above the level of the species." But you don't know the answer, so you turn to your teacher to ask for hints. He says that "macroevolution is evolution over geologic time above the level of the species" and "macroevolution is said to be the change from one species to another". So, what's the best answer to the question?

OPTIONS:
- Warm air moving into cold air
- wind and erosion
- remains of prehistoric life
- tectonic plates being pushed together
- Something with a head, thorax, and abdomen
- The area was once underwater
- Species changing to another.
- movement of tectonic plates

Answer: Species changing to another.

You are presented with the quiz "What typifies life?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "oxygen is just one substance transported by the blood" and "blood typifies the life, for the life is in the blood". So, what's the best answer to the question?

OPTIONS:
- Beauty
- exercise
- Energy
- Color
- recovery
- Movement
- Oxygen
- Energy.

Answer:
Oxygen