1. Choose two microorganisms from the Scale Cards or the Scale Tool. 2. Draw your microorganisms at 20,000 times their actual size.

3. Label each microorganism with its size and name.

scale: 20,000 times actual size.

2 centimeters (cm) = 1 micrometer (um)

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

As a small change in a person's dna can cause a genetic disorder

How do cells grow and reproduce to maintain homeostasis?