Q: A windstorm knocks down many trees in a national park. Timber companies want to get rid of the fallen trees. How would this most likely harm the park ecosystem?

OPTIONS:
- reduces the risk of fire
- decreases erosion problems
- increases the risk of drought
- removes available nutrients
A: removes available nutrients
Q: A female dog is having puppies. She has black fur, brown eyes, and a curly tail. She can sit, bark, and roll over on command. Which set of traits can the female dog's puppies inherit?

OPTIONS:
- brown eyes, black fur
- fur, roll over on command
- brown eyes, sit on command
- bark on command, curly tail
A: brown eyes, black fur
Q: Manganese has an atomic number of 25 and an atomic mass of 55 amu. How many particles are found in its nucleus?

OPTIONS:
- 25
- 30
- 55
- 80
A: 55
Q: A plant has yellow flowers. What best explains why the flowers are yellow?

OPTIONS:
- The sunshine colored the flowers yellow.
- The flowers of the parent plants were yellow.
- It was very warm when they flowered.
- It rained every day.
A:
The flowers of the parent plants were yellow.