Input: Answer this question:
Which of the following distinguishes the organisms in the kingdom Fungi from other eukaryotic organisms?
OPTIONS:
- Fungi are unicellular.
- Fungi reproduce sexually.
- Fungi obtain nutrients by absorption.
- Fungi make food through photosynthesis.
Answer: Fungi obtain nutrients by absorption.

*Question*: Termites eat wood but cannot digest it. Protozoans live in the termites' stomachs and use enzymes to break down the wood. The digested wood provides nutrition for both the termites and the protozoans. What type of relationship is this? OPTIONS:
- mutualism
- parasitism
- predation
- commensalism
*Answer*: mutualism

question:
As the population of small fish in a lake decreases, the population of large fish that depend on the small fish for food will
OPTIONS:
- reproduce faster
- begin to produce their own food
- decrease in number
- increase in number

answer:
decrease in number

[Q]: Which list contains only things that are part of our solar system?
===
OPTIONS:
- planets, moons, comets
- galaxies, quasars, asteroids
- black holes, novas, stars
- clusters, asteroids, meteors
****
[A]: planets, moons, comets

question below:
Base your answer on the information below and on your knowledge of science. A baseball strikes the roof of a car and dents it. The paint on the roof begins to crack and chip, exposing the metal. The exposed metal on the roof rusts, eventually causing a small hole in the roof. Which event is a chemical change?
OPTIONS:
- The baseball strikes the roof.
- The roof of the car dents.
- The paint cracks and chips.
- The exposed metal rusts.
answer below:
The exposed metal rusts.

In a desert environment, cactus wrens often build their nests in cholla cacti to avoid predators. This behavior does not hurt the cacti. Which type of relationship do cactus wrens and cholla cacti demonstrate?
OPTIONS:
- competitive
- commensalism
- mutualism
- parasitism
commensalism