Will give 50 points which percentage represents the estimated peak absorption of clorophll b according to this graph a. about 70% b. about 80% c. about 68% d. about 27%

What causes temperature extremes in the desert

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled

Asegment id dna that is artificially created from two or more organism through use of dna enzymes in a laboratory is called a segment of dna that is artificially created from two or more organisms through use of dna enzymes in a laboratory is called