If a person has a dominant gene and a recessive gene for a certain trait, which will be expressed?

The dominant gene.

Explanation:

answer; i believe its echoic memory,it is believed to last three to four seconds; good luck

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.