i believe the answer is Abrasion and Impact. Hope this helps :-)
<span>The lobe or cortex is the largest part of the brain, full of thought, perception, imagination. It is a thin layer of gray matter, divided into four lobes with different functions. The frontal lobe is the cortex that is further away from the cerebellum and is responsible for voluntary movements and decisions and is considered the most important lobe where personality and intelligence develops.</span>
<span>Provirus - Is is a virus that has attached itself into the DNA of a host cell, while retrovirus is a virus that becomes a provirus. It usually happens when retrovirus invades a cell. According to study while the provirus is attached in to its host, it is not active.</span>
No more than five trophic levels are present in an ecosystem, most have only 4.
Well it depends, it contributes because it falls on different ways people believe and how we use things and such