Explain how genetic engineers remove sections from human dna for splicing into bacterial dna

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere

What materials must dams have to produce electricity, and what must occur?

Aresident is five feet tall.what is the measurements in iches