If element x has 15 protons, how many electrons does it have?

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.

Which units ate used to measure both velocity and speed? check all that apply

_tissues respond quickly to outside stimuli a) epithelia b)nervous c)muscular d)muscular and nervous