Multiple choice

Which of the following is NOT a reason that an ecosystem's population could decrease?

  1. water is scarce

  2. increase in amount of predators

  3. environment is no longer safe

  4. abundance of food

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

An abundance of food is a favorable condition that supports population growth or maintenance, whereas scarcity of water, increased predation, and unsafe environments all lead to population decline.