<span>it causes mutation leading to cancer </span>is a good reason for why tobacco smoke is considered a carcinogen
The answer is a. the abiotic components of an ecosystem
some <u>cyano bacteria</u> carry out the convertion of gasious nitrogen to biological useful form of nitrogen .
microevolution can lead to macroevolution
A thoracic surgeon refers to a surgeon exhibiting a special training in operating organs within the chest, like the lungs and the heart.
Thoracic surgery also called cardiothoracic surgery refers to the branch of medicine that deals with the surgical treatment of organs present within the thorax, that is, the chest. Usually, the treatment of the conditions associated with lungs and heart comes under thoracic surgery and is performed by a specialist thoracic surgeon.