Yes:
At the bottom of every food chain are producers. They make up the backbone of life on earth. Without organisms that take energy from the sun and convert it to usable energy, where would all the other organisms, like us, get our energy? While many times it is indirect, all organisms, in part, rely on the sun for energy and in turn, for life.
1, 2, 3, 4 straight down. They are already in order.
Answer:
B, D, D
Explanation: Chargaff’s rule is that the percentages of Adenine equal those of Thymine and the percentages of Guanine equal those of Cytosine meaning B is the correct answer for the first one. For the second one, conservative means to keep and semi mean half therefore semi conservative means keeping half meaning D is the correct answer. For the last one, D is the answer because adenine pairs with thymine and guanine pairs with cytosine.