Name
Date
Directed Reading for
Content Mastery
Class
Overview
Interactions of Life
Directions: Complete the two concept maps using the words listed below.
consumers
community
decomposers
carnivores
biosphere
omnivores
herbivores
ecosystem
The 4. _____________ includes the top portion of Earth’s crust, all the waters that cover
Earth’s surface, and the surrounding atmosphere.
An 3. _____________ consists of all the communities that live in an area and the
nonliving features of their environment.
A 2. _____________ consists of all the populations that live in an area.
A 1. _____________ consists of all the organisms of one species that live in an area.
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
All living organisms on Earth are either producers or consumers.
Green plants and
other
There are four categories of 6. ____________, none
of which can make their own energy-rich compounds.
5. ____________
use an outside energy
source to make
energy-rich
compounds.
7. ____________ eat producers.
8. ____________ eat consumers.
9. ____________ eat producers and consumers.
10. ____________ consume dead organisms.
Interactions of Life 19
Meeting Individual Needs
population
producers
Name
Date
Section 1
Section 2
Directed Reading for
Content Mastery
■
■
Class
Living Earth
Populations
Directions: Circle the word listed below in the puzzle. Then complete the sentences by writing the words in the
appropriate spaces.
habitat
community
carrying
limiting
biosphere
size
ecologists
A H R X
population
biotic
Z A R Y F W P
C A R R Y
I
N G Y G A
Meeting Individual Needs
D B
I
O S P H E R E C
L
I
M
I
F
B
H
T W C S D E Y D S
I
T
I
N G
I
Y A S M G F R E R R O
J
T S N H J
T
Y T
F
T
P O P U
L A T
O N
I
U H X E
L K S H D F
C
C O M M U N
I
Y W F R P C Z
I
T Y E C
H U
I
D
E C O L O G
I
S T S E
1. The part of Earth that supports life is called the ____________________.
2. ____________________ are scientists who study the interactions of organisms and
their environments.
3. All the people living in one area make up that area’s ____________________.
4. All the animals and plants living in an area make up a ____________________.
5. The desert is a tarantula’s ____________________.
6. Competition limits a population’s ____________________.
7. Anything that restricts the number of individuals in a population is a
____________________ factor.
8. ____________________ capacity is the largest number of individuals of one
species that an ecosystem can support over time.
9. The highest rate of reproduction for a population is its ____________________
potential.
20 Interactions of Life
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
U U L O T Y E H U G H
Name
Date
Directed Reading for
Content Mastery
Section 3
■
Class
Interactions Within
Communities
Directions: Write the word that completes each sentence in the correct space in the puzzle. The answers are
listed below. The letters in the dark, vertical box spell the answer to question 7.
consumer
commensalism
symbiosis
mutualism
niche
producer
Meeting Individual Needs
1
2
3
4
5
G
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
6
1. A ______ refers to how an organism survives, including its habitat, how it
obtains food and shelter, and how it avoids danger.
2. A ______ is an organism that cannot make its own energy-rich molecules.
3. A ______ is an organism that uses an outside energy source to make energy-rich
molecules.
4. A symbiotic relationship in which both species benefit is called ______.
5. ______ is a symbiotic relationship in which one organism
benefits and the other is not affected.
6. ______ is any close relationship between species.
7. ______ is the study of interactions among organisms and their environment.
Interactions of Life 21
Name
Date
Directed Reading for
Content Mastery
Class
Key Terms
Interactions of Life
Directions: Select the term from the following list that matches each description.
biosphere
ecology
mutualism
carrying capacity
ecosystem
parasitism
commensalism
habitat
population
community
limiting factor
producer
consumer
niche
symbiosis
1. how an organism survives, including its habitat, how it
obtains food and shelter, and how it avoids danger
Meeting Individual Needs
2. the place in which an organism lives
3. all the organisms in an ecosystem that belong to the same
species
4. all the populations in an ecosystem
5. all the organisms living in an area and the nonliving
features of their environment
7. anything that restricts the number of individuals in a
population
8. the largest number of individuals of one species that an
ecosystem can support over time
9. the study of interactions that occur among organisms
and their environment
10. organisms that use an outside energy source, such as the
Sun, to make energy-rich molecules
11. organisms that cannot make their own energy-rich
molecules
12. any close relationship between species
13. a symbiotic relationship in which both species benefit
14. a symbiotic relationship in which one organism benefits
and the other is not affected
15. a symbiotic relationship in which one organism benefits
but the other is harmed
22 Interactions of Life
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
6. the part of Earth that supports life, including the top
portion of Earth’s crust, all the waters that cover Earth’s
surface, and the surrounding atmosphere