Abiotic/Biotic
Variables
Producers/Consumers/Decomposers
Succession
100

True or false: Temperature is a type of abiotic factor

True
100

If I measure the rate of decomposition of apples both in a fridge and outside a fridge, which is my independent variable?

The temperature of the apples

100

A plant or bacteria that makes its own food via photosynthesis is called a...

Producer

100

True or false: Primary succession only occurs on new land

True

200

List three abiotic factors in a forest ecosystem

Answers will vary

200

If I measure the rate of decomposition of apples both in a fridge and outside a fridge, which is my dependent variable?

The rate of decomposition

200

A plant or animal that eats other organisms is called a...

consumer

200
True or false: Primary succession usually has pioneer species such as shrubs and small plants

False

300

True or false: Water is a type of biotic factor

False

300

If I measure the rate of decomposition of apples both in a fridge and outside a fridge, list 2 control variables

Answers will vary

300

An herbivore is also known as a...

Primary consumer
300

Define secondary succession

The creation of a new ecosystem where a previously existing ecosystem was destroyed

400

What is the difference between a primary consumer and a secondary/tertiary consumer?

Primary consumers eat producers, secondary or tertiary consumers eat primary consumers

400

How is new soil created in primary succession?

Pioneer species like fungi, lichen, and bacteria break down rocks into soil particles with acid

500

Why are decomposers essential to an ecosystem?

Decomposers are necessary to clear dead organisms from the ecosystem and to recycle those dead organisms into the soil to provide nutrients for new plants.

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