D is the correct answer :)
Answer:
»Some of the uses of surface tension :-
1) Surface tension allows insects (e.g. water striders), usually denser than water, to float and slide on a water surface.
2) Surface tension is an important factor in the phenomenon of capillarity.
3) Surface tension has the dimension of force per unit length, or of energy per unit area.
1. Take less food at the start and if you still hungry get some more.
2. If you have pets/farm animals instead of throwing the food away give it to them.
3.Use foods that expire first before using the food you've just bought.
the answer is D) natural selection
Todos los seres vivos tienen células
