Fact 1: Planting trees has a positive impact on an ecosystem. Fact 2: Thus one important job the squirrel does in the ecosystem is to plant trees. Given the two facts above, what kind of effect does a squirrel have on the ecosystem?
Possible answers:
1). Negative.
2). Positive.
3). adding heat.
4). growth.
5). food.
6). Destructive.
7). Powerful.
8). support.
Answer:
2).