Which of these is an example of land contamination? A. Agricultural runoff
B. A clear-cut forest
C. An eroding hillside
D. Arid land

Experiment scenario 2: a biology student wants to conduct a study of how the amount of food affects the weight gain for mice. i have set up four cages with a mouse in each cage. fill in the boxes that would allow the biology student to complete the study correctly

What are two different ways you could find the value of a? explain these methods.

By what primary heat transfer mechanism does the sun warm the earth?