Which of the following is an example of stored energy? a. A car rolling down a hill
b. A soccer ball sitting on top of a cabinet
c. A dog lying on the floor
d. None of the above

Although there are a limited number of amino acids many different types of proteins exist because..

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.

When analyzing tree rings, what do scientists assume a thin ring indicates?