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1. 
An individual belonging to a specific species
A.
biotic
B.
community
C.
organism
D.
reptile
2. 
An area where an organism finds food, shelter and water in a specific arrangement
A.
niche
B.
biosphere
C.
biome
D.
habitat
3. 
All of the living and nonliving things in an area that interact with each other are called a/an
A.
ecosystem
B.
community
C.
habitat
D.
population
4. 
The non-living part of an ecosystem
A.
ocean
B.
atmosphere
C.
biome
D.
abiotic
5. 
Organisms that look similar and can produce fertile offspring.
A.
species
B.
animals
C.
plants
D.
single-celled organisms
6. 
A term describing the relational position/role of a species or population in an ecosystem.
A.
biospher
B.
habitat
C.
niche
D.
individual organisms
7. 
What is the correct order for the Levels of Organization?
A.
Organisms>Populations>Ecosystems>Communities>Biosphere
B.
Organisms>Populations>Communities>Ecosystems>Biosphere
C.
Organisms>Populations>Communities>Biosphere>Ecosystems
D.
Organisms>Communities>Populations>Ecosystems>Biospher
8. 
Different communities together with their physical surroundings make up a(an)...
A.
Populations
B.
Biosphere
C.
Biome
D.
Ecosystem
9. 
All of the ecosystems together form this?
A.
Biosphere
B.
Community
C.
Population
D.
Atmosphere
10. 
The study of how organisms interact with other organisms and their environment
A.
biology
B.
ecology
C.
ecological systems
D.
environmental systems
11. 
Most of the energy in the ecosystem comes from...
A.
the animals
B.
the plants
C.
organic compounds
D.
the sun
12. 
A single population is made up of...
A.
a group of organisms that may be different species
B.
several communities of different species
C.
a group of organisms that are all the same species
D.
several communities of the same species
13. 
How is the amount of bacteria in a bathroom effected by the number of people who don't wash their hands? Identify the independent variable?
A.
how many people don't wash their hands
B.
how many people used the bathroom
C.
amount of bacteria
D.
amount of soap they use if they wash their hands
14. 
How is the amount of bacteria in a bathroom effected by the number of people who don't wash their hands? Identify the dependent variable?
A.
how many people don't wash their hands
B.
how many people used the bathroom
C.
amount of soap they use if they wash their hands
D.
amount of bacteria
15. 
How is the amount of bacteria in a bathroom effected by the number of people who don't wash their hands? Identify a possible controlled variable?
A.
how many people don't wash their hands
B.
how many people used the bathroom
C.
amount of soap they use if they wash their hands
D.
amount of bacteria
16. 
What best describes a community?
A.
How do frogs used oxygen under water to breathe
B.
How are the number of mice in area affected by the number cats in a given area?
C.
How does a disturbance, like a fire or predator, affect the number of a mammal species in African grasslands?
D.
How does fire effect the amount of food available in grassland ecosystems?
17. 
What best Ecological question describes the Biosphere?
A.
How does the amount of dissolved oxygen in a pond affect the number of fish that live there?
B.
How does carbon dioxide in the air affect global temperature?
C.
How do camels keep water in their bodies?
D.
What causes the growth of a rabbit population?
18. 
The growth of an ecosystem depends on...
A.
the number of organisms that live there
B.
the amount of nutrients that get recycled
C.
the energy that flows through it
D.
the amount of rainfall, sunlight, and temperature in the area
19. 
Ecology examines:
A.
Abiotic factors effecting an environment
B.
Biotic factors effecting an environment
C.
Both abiotic and biotic factors in an environment
D.
Neither abiotic or biotic factors in an environment
20. 
What is true about an ecosystem?
A.
it's an open system because only energy can flow through it and it consists of abiotic factors only
B.
it's an open system because both matter and energy can flow through it and it consists of biotic and abiotic factors
C.
it's an open system because only matter can flow through it and it consists of biotic and abiotic factors
D.
it's an open system because both matter and energy can flow through it and it consist of biotic factors only
21. 
Different populations living and interacting with each other in the same area
A.
Biome
B.
Ecosystem
C.
Community
D.
Niche
22. 
The area between the highest mountain and the deepest ocean where life can be found
A.
Biosphere
B.
Biome
C.
Community
D.
Ecosystem
23. 
The living part of an ecosystem.
A.
abiotic
B.
biotic
C.
Earth
D.
animals
24. 
An individual living thing
A.
species
B.
organism
C.
atom
D.
molecule
25. 
Which of the following descriptions about the organization of an ecosystem is correct?
A.
Communities make up species, which make up populations.
B.
Populations make up species, which make up communities.
C.
Species make up communities, which make up populations.
D.
Species make up populations, which make up communities.
26. 
The lowest level of environmental complexity that includes living and nonliving factors is the
A.
biome
B.
ecosystem
C.
community
D.
biosphere
27. 
Which of the following is NOT a basic method used by ecologists to study the living world?
A.
experimenting
B.
modeling
C.
Classifying
D.
observing