Ecosystems

How is energy, matter, and nutrients recycled throughout an ecosystem?

• through photosynthesis

• nitrogen cycle

• food chains

• consumers

If organisms go extinct how is an ecosystem impacted?

• the ecosystem could collapse

• other organisms would not have the proper energy

• sunlight would be missing

• consumers would be missing

What are some effects if a nonliving factor is removed in an ecosystem?

• organisms would not have the necessary factors to survive

• photosynthesis

• ecosystem could collapse

• cellular respiration

Which of the following is NOT an essential non-living factor?

• sunlight

• water

• oxygen

• producers

Why is there competition in ecosystems?

• limited energy

• limited sunlight

• limited food & water

• limited space

Typically there are how many organisms in a food chain?

• 1

• 2

• 3

• 4

• 5

Why is there a limited amount of organisms in a food chain?

• there is a limited amount of energy in an ecosystem

• there is not enough stuff for all organisms

• the organisms begin to disappear

• only 10% of energy is passed down to consumers

Organisms that make their own food and energy for other organisms...

• primary consumers

• apex predators

• secondary consumers

• producers

Photosynthesis...

• passes down energy to consumers

• transfers sunlight into chemical energy

• absorbs energy

• soaks up the nutrients from the surrounding environment

Without these organisms, other species would not receive the energy they need or oxygen to survive

• consumers

• decomposers

• producers