What do you think about my puppy in my profile pic? on a scale of one to ten

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above