What effect does varying salt concentrations have on the mass of plant tissue

Consider darwin's first writings on the theory of natural selection. an important point of darwin's essay on the principle of population, written in 1798, was a peer's observation that in nature plants and animals produce far more offspring than can survive, this observation can be attributed to a) charles lyell. b) thomas malthus. c) jean-baptiste lamarck. d) johann friedrich meckel.

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.