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Living Things
Interactions of Organisms
Cycles
Energy Flow in Ecosystems
Populations
100
smallest unit of life
cell
100

Snails only eat plants. A snail can be described as a(n):

herbivore
100
Identify the cycle in which evaporation, condensation, and precipitation take place.
water cycle
100
Identify the main source of energy for an ecosystem.
the sun
100

All the organisms of the same species that live in the same area at the same time.

population
200

An organism has only one cell that controls all functions for the organism. Is the organism multicellular or unicellular?

unicellular
200

Foxes only eat meat (animals). A fox can be described as a(n):

carnivore
200
Identify the cycle in which decomposer break down dead organisms to produce fossil fuels.
carbon cycle
200
Describe the first organism found in a food chain or food web.
producer: plant, tree, grass, etc.
200

The size of a population compared to the amount of space available.

population density
300

An organism has many cells and each cell has a special function. Is the organism unicellular of multicellular?

multicellular
300

Lizards eat both plants and animals. A lizard can be described as a(n)

omnivore
300
Identify the cycle that moves oxygen through an ecosystem.
oxygen cycle
300
Identify the consumer level of an organism that gets its energy from the producer.
first level consumer
300

The parts of Earth and the surrounding atmosphere where there is life.

biosphere
400
Sunlight, water, air, and carbon dioxide are considered which type of factors?
Abiotic
400

Plants make their own food. A plant can be described as a(n):

Producer
400
Identify the cycle in which nitrogen fixation takes place.
nitrogen cycle
400
The organism that gets its energy from the second level consumer would be classified at which level?
Third level consumer
400

The demand for resources, such as food, water, and shelter, in short supply in a community.

competition
500
Identify 5 of the seven characteristics of life.

1. made of cells

2. uses energy

3. reproduce

4. grow and development

5. organization

6. homeostasis

7. respond to stimuli

500
Hawks eat the remains of dead organisms. A hawk can be described as a:
detritivore
500
What would happen if evaporation stopped?
The other parts of the water cycle would not occur
500
What type of organism gets its energy from the top level consumer in a food chain or energy pyramid?
Decomposer
500
Identify 3 reasons why a population would decrease.
less food, natural disasters (floods, fires, volcanoes), disease, predators