Lesson 1 Section 4 - Living Things

True or False?

Living things can cause the Earth to change

• True

• False

The roots of a tree can ​ (a)   up or ​ ​ (b)   down weathering, erosion, and deposition.

• speed
• slow

What example below shows evidence of living things causing the Earth's surface to change?

• Roots sticking out of broken rocks

• Sand being pushed onto the shore by waves

• Dried mud being deposited in a new place

• Soil being carried away by a rainstorm

Suppose you are a scientist looking for evidence of how plants have changed Earth’s surface. Watch the following video. Be prepared to answer questions about what you saw. Which TWO pieces of evidence did you see showing how this plant is changing the wall over time?

• The plant is growing from the wall

• The plant is small

• The rain eroded the dirt away

• The wall is cracked where the plant is growing