A(n) is a lesion that is a different color than the color of the skin. ulcer primary lesion fissure secondary lesion

How do you know that the plant cells in these two images have different jobs, or functions? a. because all plant cells serve different functions b. because they are two different colors c. because their dna are different d. because their structures are different

What is an example of a scientific question that galileo could not have answered with out this new tool?

How many electrons can occupy any electron orbital?