23
Lesson 23 of 84 · Life Cycles
ExperimentThe 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
- vertebrate
- invertebrate
Materials Needed
- markers
- tape
- small pots
- cotton balls
Safety First
- Protect your work surface with newspaper or plastic.
Steps
Step 1 — Read
Read and 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.
Step 2 — Do
Repeat the experiment two more times for accuracy.
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 3Why do some birds migrate?