Factors
Relationships
Lesson 3
100

This is something that stops a population from growing.

What is a limiting factor?

100

A banana slug is an example of this organism (decomposer, producer, consumer, carnivore).

What is decomposer and producer?

100

These activities (increase or decrease) the amount of carbon dioxide in the atmosphere: eating a sandwich, cutting down trees in the forest, and driving a car to the store (to buy the sandwich).

What is increase?

200

This is an example of a limiting factor due to geographic or surface area lack of.

What is space?

200

A wolf is an example of this organism (decomposer, producer, consumer, carnivore).

What is  consumer and carnivore?

200

This is the part of the water cycle in which liquid turns into gas.

What is evaporation?

300

Over time, a population of bats decreases, this is one example of a factor leading to this decrease.

What is____________

300

In a food chain or web, which of these animals has the least amount of accessible energy: grass, grouse, hawk, insect.

What is a hawk?

300
Free Nitrogen can be fixed by these two things.

What are lightning and bacteria?

400

Over time, a population of bats decreases, this is one example of a factor leading to this decrease.

What is ________?

400

In a food pyramid, where would cynobacteria be placed (bottom or top).

What is bottom or tier 4?

400

This is the reason people use nitrogen based fertilizers to help plants grow.

What is because plants cannot use free nitrogen?

500

An increase in food supply, would likely lead to an _____________ in population.

What is increase?

500

What is one example of a model you can use to explain the relationships of organisms within an ecosystem?

What is food pyramid, food chain, food web?

500

Plants are part of 2 cycles, oxygen and carbon, examples of these cycles are _______________, respiration, decomposition.

What is photosynthesis?