Module 1 Practice - Life Science Ecosystems

What is the only process that removes carbon from the atmosphere?

• combustion
• cellular respiration
• photosynthesis
• decomposition

What converts nitrogen into a useable form for plants and animals?

• bacteria
• fungi
• rain

Which nutrient is not cycled through the atmosphere?

• carbon
• nitrogen
• phosphorous
• water

Photosynthesis is an important part of the ______ cycle

• Carbon

• Water

• Phosphorus

• Nitrogen

In evaporation, water _______

• turns from a liquid state to vapor (gas)

• falls from the sky like rain or snow

• forms clouds

• gets locked into ice

How do animals get nitrogen?

• the atmosphere 
• eating other organisms
• rainwater
• lightning 

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

During which phase of the nitrogen cycle is nitrogen gas returned to the atmosphere?

• Ammonification
• Nitrogen fixation
• Nitrification
• Denitrification

Which of the following events removes water from the atmosphere?

• Precipitation
• Evaporation
• Infiltration
• Run off

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.