Question

Define the following terms: 

1. Perpetual

2. Phytoplankton

3. Regurgitate

4. Substantial

5. Rivulet

Answer 1

1. Perpetual: Never ending or changing.

2. Phytoplankton: Microscopic plants that live in watery environments both salty and fresh.

3. Regurgitate: Bring up again to the mouth (swallowed food). 

4. Substantial: Of considerable importance, size, or worth.

5. Rivulet: A small stream of water or another liquid.