What type of microscope would you use to view a live sample? 1. Scanning Electron Microscope
2.Transmission Electron Microscope
3.Magnifying glass
4. Light Microscope

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

If there are 350 trout found in 200 square feet of a pond measuring 1000 square feet what is the estimated trout population of the pond? a. 1350 b. 1550 c. 1750 d. 2000

Eutrophication caused by human nutrient pollution.