22. A substance with a pH of 4 is called
an acid,
b. a base,
water
d a suspension

Photosynthesis converts light energy to chemical energy. which molecules are the end product of this transformation of energy in this reaction?

Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials

Which of the following is a common response to cell signaling?