5he answer to this question is the letter B
Whole genes and parts of genes can be extracted from chromosomes, linked to other DNA molecules to form recombinant DNA and introduced into living cells. In a process known as gene cloning, the host cell's biochemical processes are used to make many copies of the inserted gene and the protein it codes for.
I just had this answer but it hasn't been graded. I put 1. Meteor impacts, 2. volcanic gases and 5. Milankovitch cycles. I didn't put earthquakes because I wouldn't think it would affect the climate changing since they just affect ground movement.
There are many forms of electromagnetic energy<span> including gamma rays, x rays, ultraviolet </span>radiation<span>, visible light, infrared </span>radiation<span>, microwaves and radio waves. </span>
