Question: Choose your answer.

Which event would most likely result in more food for organisms that are scavengers?

OPTIONS:
- Fish die and sink to the bottom of a pond.
- Trees take up and store water with roots.
- Beavers build a new dam and lodge.
- Plants get more sunshine and water.
My Answer: Fish die and sink to the bottom of a pond.

Question: Choose your answer.

On the periodic table, the elements in group 18 (8A) (helium, neon, argon, etc.) are grouped together because

OPTIONS:
- they are lighter than air.
- they have full outer electron shells.
- they have excess electrons to share.
- they easily react with other elements.
My Answer: they have full outer electron shells.

Question: Choose your answer.

A genetic mutation has caused the fur color of field mice to contrast with their environment. This type of mutation will most likely

OPTIONS:
- benefit the mice.
- harm the mice.
- increase reproductive rates.
- decrease competition for resources.
My Answer: harm the mice.

Question: Choose your answer.

When nitrogen-rich runoff from farms enters a nearby farm, it causes abundant growth of algal mat on the pond surface. As a result, underwater plants in the pond begin to die. Identify the limiting factor that is most responsible for causing the underwater plants to die.

OPTIONS:
- oxygen
- sunlight
- nitrogen
- carbon dioxide
My Answer:
sunlight