The variable in an experiment is an attribute that is manipulated by the experimenter under controlled conditions.

Can someone me with this and tell me what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

Granite rock is light in color. which feature directly contributes to this color? the process that forms granite the amount of silica minerals in granite the shape of the grains found in granite the unique pattern formed by grains in granite

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes