Q: The lungs perform gas exchange using air and what fluid, which is coming and going from the heart? A:
OPTIONS:
- mucus
- water
- saliva
- blood
blood

Q: Although individuals of a given species are genetically similar, they are not identical; every individual has a unique set of these? A:
OPTIONS:
- mutations
- habits
- chromosomes
- traits

Answer: traits

Question: Q: Birds are thought to have evolved around 150 million years ago from what? A:
OPTIONS:
- teradactils
- raptor dinosaurs
- parrot dinosaurs
- theropod dinosaurs
Answer: theropod dinosaurs

input with options: Q: Most members of what mammalian order possess opposable thumbs? A:
OPTIONS:
- marsupials
- rodents
- amphibians
- primates
output: primates

Q: Q: What is the leading cause of skin cancer? A:

OPTIONS:
- artificial light
- dehydration
- smoking
- sunlight

A: sunlight

Q: The oldest fossil of land plants date back how many millions of years? A:
OPTIONS:
- 520 million years
- 350 million years
- 430 million years
- 470 million years
470 million years