Q: Fact 1: Cells are organized into tissues, and tissues form organs. Fact 2: Neurons are the cells of nerve tissue. Given the two facts above, what tissue do neurons make up? | OPTIONS:
- PDAs
- small
- alveoli
- animals
- nerve
- eardrum
- ovaries
- organ
A: nerve

Q: Fact 1: Bivalves feed on plankton and nonliving organic matter. Fact 2: Bivalve molluscs are very common. Given the two facts above, what feeds on plankton and nonliving organic matter? | OPTIONS:
- bacteria
- barnacles
- animals
- sharks
- pythons
- graptolites
- molluscs
- bears
A: molluscs

Q: Fact 1: Hair helps to insulate and protect the body. Fact 2: Hair grows from hair follicles within the skin. Given the two facts above, what helps insulate and protect the body? | OPTIONS:
- layers of fat
- follicles within the skin
- with their fur
- the sun
- it has a positive impact on it
- electrons
- sound waves
- that material's properties
A: follicles within the skin

Q: Fact 1: Cells cannot survive without oxygen. Fact 2: Cells are the units of function in living things. Given the two facts above, what cannot survive without oxygen? | OPTIONS:
- animals
- tanks
- an organism's body
- living things
- hydrogen
- space
- Veins and arteries.
- mammals
A: living things