Which action can be explain by physics?

a- the growth of fungus on a piece of bread

b- the mixing of sodium and chlorine to form common salt

c- the interactions between predators and prey in an system

d- the pressure of blood exerted on the inner walls of the vein

Answer asap 50 points which of the following illustrates how a venus fly trap senses that an insect has landed in its open leaves? 1. using tiny hairs, the leaves sense a change in light. 2. using tiny hairs, the leaves taste a chemical. 3. using tiny hairs, the leaves detect a touch. 4. using tiny hairs, the leaves sense a change in water levels.