We see the so called " near side " of the moon. Because the moon spins in the exact rotational period we see the same side of the moon every time we look at it .
Answer
The common name of Lucy is Southern ape, while their scientific genus name is <em>Australopithecus afarensis</em>.
Around 4.1 billion years ago the first single celled organism appeared
I believe that the most logical explanation for this is that the right primary bronchus is wider than the left one (and the right lung is larger than the left lung), therefore the right lung receives slightly more carcinogenic cigarette smoke with each puff. In lung cancer. the cancer cells usually arise from the epithelium lining of large bronchus.