Which statement best explains how the animals in the diagram contribute to the carbon cycle? A.
They remove carbon from the atmosphere during respiration and replace it with oxygen that is used in photosynthesis.

B.
They eat plants and other organisms that contain carbon which prevents it from ever being stored.

C.
They remove carbon from the soil during respiration and exchange it with oxygen that evaporates into the atmosphere.

D.
They eat plants and other organisms which contain carbon and deposit carbon into the soil when they die.

The following table lists the birth rate, death rate, and net migration rate for egypt over the past 20 years. on a coordinate plane, plot the birth rate data and death rate data for egypt. clearly, show each data point and label each curve. be sure to label the graph and axes. save a copy of your graph. then answer the following questions: (14 points) a. what was the annual growth rate for egypt in 1990? what is the estimated annual growth rate in 2010? be sure to show your work for each answer. b. where does egypt most likely fall on the demographic transition model? explain your answer using data from the table. describe two changes within egyptian society that would likely be necessary for egypt to transition to the next stage in the model. c. assuming egypt’s current birth rate, death rate, and net migration rate trends continue, what will the country’s annual growth rate likely be in 2030? if this growth rate is accurate, what would its doubling time be in 2030?