You are presented with the quiz "What heats frog eggs so that they may hatch into tadpoles?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an egg requires warmth to survive" and "first the frog lays the eggs, then the warmth from the sun makes the eggs hatch into baby tadpoles". So, what's the best answer to the question?
OPTIONS:
- sun's heat
- heat
- the sun
- geothermal vents
- Cooking
- the mother frog
- the father frog
- sunlight

Answer: the sun

You are presented with the quiz "What are vascular plants that produce seeds in cones?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "gymnosperms are vascular plants that produce seeds in cones" and "gymnosperms are the plants that are known as evergreens". So, what's the best answer to the question?
OPTIONS:
- evergreens
- it needs them
- Leptospirosis
- epidermal
- Conifers
- white
- Newton
- more abundant

Answer: evergreens

You are presented with the quiz "what do proteins fight?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "antibodies are large, Y-shaped proteins that recognize and bind to antigens" and "antibodies are produced to fight antigens". So, what's the best answer to the question?
OPTIONS:
- heat
- calories
- carbohydrates
- illness
- parasites
- fat
- resistance
- antigens

Answer:
antigens