Answer:
Option (1).
Explanation:
DNA (deoxyribo nucleic acid ) is the genetic material present in all the organisms except some viruses. DNA structure follows the Chargaff's rule.
Accoprding to Chargaff's rule, the ratio of purines to pyrimidines in a DNA molecule is equal to 1. The amount of guanine is nearly equal to the amount of cytosine whereas the amount of thymine is nearly equal to the amount of adenine.
Thus, the correct answer is option (1).
Answer:
d. there is a relationship between smoking and lung cancer
Explanation:
a) it is NOT true becasue although the research show that is more likely to get lung cancer for smokers, it DOES NOT show that all smokers get cancer.
b) it is NOT true becasue altough it is very possible that smoking contributes to lung cancer, the research DOES NOT prove that smoking is the cause of lung cancer, it only indicates a relationship between smoking and lung cancer that is evidence that smoking contributes to lung cancer but it is not irrefutable proof.
c) it is NOT true becasue the research finds a relationship between lung cancer and smoking, but it is not focused in explaining smoking predispositionon. It does not investigate predispositions in people to smoke.
World pollution isn’t good
Answer:
<em>Hi Todo here!!!</em>
Explanation:
Slowing of Earth's Spin Revealed in Ancient Astronomers' Tablets The time it takes our planet to do a full rotation has increased every century due to friction caused by tides.
<em>YW!</em>
Answer:
B
Explanation:
This disease targets mitochondrias, which produce energy for the cells.
