Abiotic Factors

Name

Date

Class

Lesson Outline

LESSON 1

Abiotic Factors

A. What is an ecosystem?

1. All living and nonliving things in an area make up a(n)

.

2. The living things in a system are the

.

3. Sunlight and temperature are examples of the nonliving factors,

or

, in an ecosystem.

B. What are the nonliving parts of an ecosystem?

1. Almost all energy on Earth originally came from the

.

a. Sunlight is used by plants to make

.

b. Two other abiotic factors that are affected by sunlight are temperature

and

.

2. If you describe the average weather conditions of an area over time, you describe the

area's

.

a. Wind, temperature, and moisture influence the daily

.

b. A lizard might live in a hot, dry

climate.

3.

is how warm or cold something is.

a. Animals that have thick fur live in climates that have temperatures.

b. Tropical birds are adapted to

temperatures.

4. Most organisms are made mostly of

.

a. Organisms need

to grow and reproduce.

b.

must contain water to support life.

5. The layers of gases that surround Earth make up the

.

a. Earth's atmosphere is mainly

and oxygen.

b. Earth's atmosphere protects organisms from harmful rays from

the

.

6.

covers much of Earth's surface. It is made up of rock,

water, air, minerals, and the remains of

.

a. Soil provides water and

for plants that grow in it.

b.

recycle nutrients by breaking down dead organisms.

Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.

10

Matter and Energy in the Environment

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