15. Which of the following is an example of a pioneer species in secondary succession?
a. Lichens
b. Grass
C. Insects
d. Shrubs

Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

As a small change in a person's dna can cause a genetic disorder