Ecology and Astronomy - 4th Benchmark Review

What is the original source of almost all energy in most ecosystems?

• carbohydrates
• sunlight
• water
• carbon

What does a food web represent?

• All connections of energy flow throughout all organisms in a habitat.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

Which of the following would be the definition of a detritivore?

• Animals that eat insects.
• Organisms that feed on rocks, recycling the nutrients back into the ground.
• Organisms that eat only pants
• Things that feed on dead organisms, recycling the nutrients back into the ground.

The nonliving aspects of an ecosystem.

• Abiotic factors
• Biotic factors

The living portions of the ecosystem.

• Biotic factors
• Abiotic factors

Water temperature would be an example of ...

• A biotic factor
• An abiotic factor

Organisms that can capture energy from inorganic, nonliving sources.

• Producers
• Consumers
• Detritivores
• Carnivores

The area between the highest mountain and the deepest ocean where life can be found

• Biosphere
• Biome
• Farm
• Ecosystem

This force of nature was responsible for pulling a giant gas cloud together forming our sun.

• Gravity
• Nebula
• Nuclear Fusion
• Supernova

This process released huge amounts of heat and light as gravity heated up the core of the sun.

• Gravity
• Nebula
• Nuclear Fusion
• Supernova