Abiotic Factors A. 1. 2.

Name
Date
Class
Chapter 20
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
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
b.
.
to grow and reproduce.
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
b.
10
.
for plants that grow in it.
recycle nutrients by breaking down dead organisms.
Matter and Energy in the Environment
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3.
climate.