A new organism is discovered. It is multicellular, autotrophic, and does not move on its own. In which kingdoms could the organism belong? OPTIONS:
- Fungi and Plants
- Protists and Plants
- Animals and Fungi
- Protists and Animals
A: Protists and Plants

Some foods that humans eat, such as corn and peas, are actually seeds from plants. What best describes the role of humans in a food web containing these plants? OPTIONS:
- a consumer
- a decomposer
- a producer
- a scavenger
A: a consumer

When people exercise, they often feel thirsty and begin to sweat. It is important for people to feel thirsty when exercising because it makes them realize that they should OPTIONS:
- take a break
- consume liquids
- slow their breathing
- stop to eat something
A: consume liquids

Why are the rocks and pebbles found on riverbeds usually smooth? OPTIONS:
- The rocks and pebbles in riverbeds are not very old.
- The rocks and pebbles rub against each other as water flows over them.
- Rivers can only flow over smooth rocks and pebbles.
- Organisms in the rivers break down the rocks and pebbles.
A:
The rocks and pebbles rub against each other as water flows over them.