Q: Fact 1: Echinoderms have a unique water vascular system with tube feet. Fact 2: Another obvious connection between the eye and the rest of the body is the vascular system. Given the two facts above, a connection is between the eye and what type of feet in echinoderms? | OPTIONS:
- tube
- Seesaw
- vision
- made
- voles
- a path
- bones
- muscle
A: tube

Q: Fact 1: Most arthropods are insects. Fact 2: Flies are insects with two wings. Given the two facts above, what is an arthopod with two wings? | OPTIONS:
- rare
- fly
- two
- host
- Aves
- male
- bird
- bats
A: fly

Q: Fact 1: Plasma is formed by electrons separating from atoms in stars. Fact 2: Most of the universe is in the plasma state. Given the two facts above, most of the universe is composed of what separated from atoms in stars? | OPTIONS:
- energy
- Joules
- nucleus
- matter
- oxygen
- RNA
- atoms
- Energy.
A: atoms

Q: Fact 1: Earthworm burrows help aerate soil, which is also good for plants. Fact 2: Insects and earthworms are very important in mixing and aerating the soil. Given the two facts above, what do earthworms mix? | OPTIONS:
- roots
- rocks
- soil
- nitrogen
- ocean
- Carbon
- Crops
- well
A: soil