Which feature is not found in most vertebrates? 1.an internal skeleton 2.an external skeleton 3.a backbone 4.a skull

M! (1). what are the inputs and the outputs for cellular respiration? (2). what is the primary source of energy for cellular respiration?

You have 2 plants of the same type and same size, same amount of leaves. one of them is put inside the house and the other one is put in the balcony. you water them saturday, one plant with 200 ml and the other with 400 ml of water. which one of your plants need less water? explain.

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that