This is the image file for the question: The diagram below represents the organizational levels of living things. Which of the following examples represents an example of the missing organizational level? *
A. Blood
B. Heart
C. Plasma
D. Vein

Environmental differences within ecosystems are generally caused by

Which would happen if more forests were cut down? a. the nitrogen cycle would be stopped b. nitrogen would be fixed by bacteria more quickly c. the amount of co2 in the atmosphere would increase d. fossil fuels would build up in the soil c the amount of co2 in the atmosphere would increase

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring