You are presented with the quiz "What causes changes in characteristics of living things over time?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "evolution is a change in the characteristics of living things over time" and "evolution relies on random chance acts to cause mutations". So, what's the best answer to the question?

OPTIONS:
- mutations
- science
- parents
- environment
- light energy
- news
- alleles
- animals

Answer: mutations

You are presented with the quiz "How many sections does a fish heart have?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "fish have a circulatory system with a two-chambered heart" and "mammals have a four-chambered heart". So, what's the best answer to the question?

OPTIONS:
- ovum
- fat
- four
- p53
- two
- cut
- bone
- stem

Answer: two

You are presented with the quiz "What sheds its leaves seasonally each year?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plants that shed their leaves seasonally each year are called deciduous plants" and "ginkgo biloba is deciduous". So, what's the best answer to the question?

OPTIONS:
- Christmas trees
- pine trees
- Leptospirosis
- Most plants
- evergreen trees
- ginkgo biloba
- Converting waste.
- In the winter

Answer: ginkgo biloba

You are presented with the quiz "What is used for used for seeing in the dark?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "alight bulb is used for seeing in the dark" and "incandescent lights heat a metal filament that radiates light inside a glass bulb". So, what's the best answer to the question?

OPTIONS:
- It gets more light
- Magnifying glass
- Heating a metal filament.
- our nearest star
- Eyeglasses
- Electrical energy
- Electric devices
- Binoculars

Answer:
Heating a metal filament.