True or false is nature itself also capable of its selection?

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

Iwanna go do something with my ideas? ?