Circle the letter of each example of mechanical weathering. a. Moles dig tunnels in the ground.

b. Wind blows sand against a rock.

c. Plant roots grow into a crack in a rock.

regulation of gene expression. gene expression can be regulated by various cellular processes with the aim to control the amount and nature of the expressed genes. these regulatory proteins bind to dna and send signals that indirectly control the rate of gene expression

explanation:

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )