If you cross parent 1 (Rr) with parent 2 (Rr), what percentage of the offspring will have a purebred geneotype? A:) 25%, 1/4

B:) 50%, 2/4

C:) 75%, 3/4

D:) 100%, 4/4

c

Explanation:

first we will multiply parent 1(Rr)and parent 2(Rr) like the photo above

burning of wood and coal

explanation:

the panel also concluded there's a better than 95 percent probability that human-produced greenhouse gases such as carbon dioxide, methane and nitrous oxide have caused much of the observed increase in earth's temperatures over the past 50 years.