20

Lesson 20 of 84 ยท Life Cycles

Experiment

Desert Survival Adaptations

What You'll Learn

Biomes are large regions with similar climate, plants, and animals. Major biomes include tropical rainforest, desert, grassland, tundra, and temperate forest.

Key Words

  • photosynthesis
  • vertebrate
  • invertebrate

Materials Needed

  • seeds
  • soil
  • cups

Safety First

  • Handle glass items carefully to avoid breakage.
  • Do not mix unknown chemicals together.
  • Tie back long hair before starting the experiment.

Steps

Step 1 โ€” Read

Study the diagram and label the parts you recognize.

Step 2 โ€” Do

Set up a composting experiment: place food scraps in one sealed bag and leaves in another. Observe decomposition over two weeks and record changes.

Step 3 โ€” Observe

Compare the before and after states.

Step 4 โ€” Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What is a food web?

Desert Survival Adaptations โ€” Life Cycles | 3rd Grade Science | LittleActivity | LittleActivity