Ecosystems: Food Chains and Cycles

Front

How can carbon dioxide (CO2) be reused within the food web?

Back

It can be used by plants during photosynthesis to create glucose.

Front

Process by which water is taken from the ocean to form clouds.

Back

evaporation

Front

Which best describes what happens when an owl attacks and kills a fish for food? Options: an interconnection between aquatic and terrestrial food webs., an interconnection between terrestrial organisms and predators, an interconnection between aquatic food webs and decomposers

Back

an interconnection between aquatic and terrestrial food webs.

Front

Which group in a food web is most likely to change atmospheric nitrogen into forms that are usable? Options: consumers, decomposers, producers, scavengers

Back

decomposers

Front

Correct flow of energy through a simple food chain: fox → grass → rabbit, grass → fox → rabbit, grass → rabbit → fox, rabbit → grass → fox

Back

grass → rabbit → fox

Front

What is the energy source for the carbon dioxide cycle?

Back

the Sun

Front

Which best explains the role of bacteria in an ecosystem? Options: They break down organic matter into necessary nutrient components., They release energy from the decomposition of atmospheric gases., They convert carbon dioxide and water into simple carbohydrates., They absorb energy from the synthesis of inorganic compounds.

Back

They break down organic matter into necessary nutrient components.

Front

Which molecule is necessary in order for respiration to occur in plants and animals? Options: nitrogen, oxygen, sulfur, water

Back

oxygen

Front

Which organisms recycle carbon in decaying matter back into atmospheric carbon dioxide? Options: fish, fungi, plants, mammals

Back

fungi

Front

Which best describes the role plants serve in the oxygen cycle?

Back

They release oxygen as a waste product of photosynthesis.