The Butterfly Life Cycle

What You'll Learn

Coral reefs are underwater ecosystems built by tiny coral animals. They support an incredible diversity of marine life including fish, sea turtles, and invertebrates.

Key Words

biodiversity
succession

Steps

Step 1 — Read

Read the introduction and identify the main idea of this lesson.

Step 2 — Do

Collect and classify 10 organisms from your yard into kingdoms, phyla, or groups. Use a dichotomous key if available.

Step 3 — Observe

Watch carefully for any changes and note the time.

Step 4 — Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

Why do some birds migrate?