Question

An ecosystem is shown in the illustration. Assume that human activities have led to a decrease in the number of eagles. A virus attack on rabbits has led to a decrease in their population in the ecosystem. Which two sentences describe likely effects on the ecosystem?

1. There’s an increase in the number of snakes and insects and a decrease in the number of frogs.
2. There’s an increase in the number of snakes and insects, and the storks face increased competition for food.
3. There’s an increase in the number of storks and a decrease in the number of snakes and insects.
4. There’s an increase in the number of frogs and a decrease in the number of storks and insects.
5. There’s a decrease in the number of snakes, insects, and frogs.

Answer 1

b & c

Step-by-step explanation:

Answer 2

The correct answer is - 2. There's an increase in the number of snakes and insects, and the storks face increased competition for food.

The significant decrease in the number of eagles, because of the human activity, and of the rabbits, because of a virus, has been of great use for the populations of the snakes to increase, as well as the populations of the insects. That has happened because the snakes lost their predator, and the insects lost a competition for a food source, so their numbers rose.

On the other hand, because of the increase of the number of snakes, the storks had started to face increased competition, as both have the same food source, the frogs.