Identify the situation where work is being done. carrying a box of crayons across the room. lifting a backpack off the floor holding a football sitting on a stool

Iknow #2 is d. i just need to know why

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

56.16 gregor mendel was the first scientist to use statistics to analyze scientific data. before mendel's experiments, scientists believed that organisms acquired traits from their environment and passed them on to their offspring. after mendel's discoveries were accepted, scientists realized that traits passed to offspring were the result of genes being passed from parents to offspring. this is an example of pls