Q) Explain the term ; Diatomaceous Earth

This is a natural rock that is easily smashed into a fine white to off-white powder.

Explanation:

It has a particle size ranging from less than 3 um to more than 1 mm.

Hope it helps.

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:

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.