I believe the answer is Volcanic glass
I believe it is because the sun is directly over us which cause more heat since it is beating down. be sure to get a second opinion
The answer would be c. only plant cells and some single cell organisms photosynthesize.
Since this is college level biology, you should know that red blood cells do not contain organelles... therefore it does not do a,c, and d. So, the question should say, which of the following is correct.
Your answer is D. Nucleotide