Multiple choice

This environment has fish, snakes, crayfish, and insects in its fresh moving water.

  1. Ocean

  2. River

  3. Pond

  4. Forest

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

Rivers are freshwater ecosystems characterized by moving water, which supports organisms like fish, crayfish, and insects. Ponds also contain freshwater but have still (non-moving) water, while oceans contain saltwater.