Question

1. How does the invasion of a new species affect the original resident organisms in a particular area?

2. What might be the reason for the rapid increase in the number of endangered species in the century?

3. What do you think Earth would be like if there were no bacteria to decompose animal and plant remains?

4. Why are there more producers than consumers in an ecosystem? Suggest a hypothesis why this is
so.

5. Imagine a dam is being built in your area to harness water from two rivers and increase water supply for the growing population in your town. What might be the positive and negative impacts
of this strategy?

Answer 1

Explanation:

1.However, when these alien species begin to have negative consequences in the new habitat, they are called invasive species. Invasive species may cause environmental harm, economic harm, or impact human health. A key factor that makes many species invasive is a lack of predators in the new environment.