Carbon and Nitrogen Cycles

Front

During photosynthesis, carbon is moved from which reservoir to which reservoir?

Back

From the atmosphere to the terrestrial biosphere.

Front

How does carbon in a grass plant get into a lion?

Back

The lion eats an antelope that ate the grass

Front

Which of the following add carbon dioxide to the atmosphere? Options: volcanoes, combustion of fossil fuels, animal and plant respiration, all of these

Back

all of these

Front

How nitrogen is "fixed" into useable form for plants? Options: only through action of bacteria, only through lightning, through action of bacteria & lightning, through photosynthesis

Back

through action of bacteria & lightning

Front

TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.

Back

True

Front

The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature? Options: lower levels of ozone in the atmosphere, lower levels of nitrogen in the atmosphere, higher levels of carbon dioxide and other greenhouse gases in the atmosphere, higher levels of oxygen in the atmosphere

Back

higher levels of carbon dioxide and other greenhouse gases in the atmosphere

Front

Relationship between plants and animals in the carbon cycle?

Back

Plants produce and release oxygen that animals need

Front

How do animals get nitrogen?

Back

eating other organisms

Front

Building proteins and DNA is the reason organisms need what substance? Options: Water, Carbon, Nitrogen, Calcium

Back

Nitrogen

Front

How do living organisms return carbon to the atmosphere in the carbon cycle?

Back

decomposition and respiration