9. Which of the following is the independent variable in the experiment? a. Soil
b. Amount of water
C. Temperature
d. Color of light

Before the can be observed by using a transmission electron microscope, cells are sliced into very thin sections. what disadvantage does this procedure present in the study of cellular parts

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

How is the national wildlife refuge system similar to the pacific region coastal program? a. both programs are concerned with providing habitats for wildlife b. both programs are primarily concerned with preserving fish species c. both programs have set aside 150 million acres of land d. both programs are under the u.s. fish and wildlife service