FLASH CARDS 1 Question Preview (ID: 62999)
Flash Cards For Chapter 20 Lesson 1.
TEACHERS: click here for quick copy question ID numbers.
True or False: Water, nitrogen, and aluminum continuously move through our environment.
a) False- Aluminum does not cycle through our environment.
b)
c)
d)
True or False: The air we breathe is mostly oxygen.
a) False- The air we breathe is mostly nitrogen. Our atmosphere is only about 20% oxygen.
b)
c)
d)
Must be found in every ecosystem to support life
a) Water
b)
c)
d)
Layer of gases that surround Earth, protects living things from harmful rays
a) Atmosphere
b)
c)
d)
True or False: Living things are made mostly of water.
a) True- Living things are about 70% water.
b)
c)
d)
Nonliving things in an ecosystem
a) Abiotic factors
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c)
d)
Average weather conditions in an area over time
a) Climate
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c)
d)
Source of almost all energy on Earth
a) Sun
b)
c)
d)
Living things in an ecosystem
a) Biotic factor
b)
c)
d)
All living and nonliving things in a given area
a) Ecosystem
b)
c)
d)
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