It is called a <span>abrasion.</span>
The pulmonary artery carries deoxygenated blood from the right ventricle into the lungs for oxygenation.
What allows cancer live at high mutation rate? Which mutations
make it weaker? Is there a way to exploit its natural mechanisms to make
it less evolvable? Harvard Associate Professor, Leonid Mirny,
on clinical phenomena we can now explain using the balance between
‘drivers’ and ‘passengers’.
Cancer is an evolutionary
process. There are accumulations of mutations and then there is
selection from mutations that make cells more malignant, more like
cancer cells. Mutations come at random.
Answer:
False
Explanation:
There are multiple ways in which the food supply can be introduced to pathogens e.g.
1)inadequate handwashing.
2)cross-contamination.
3)storage and cooking temperatures.
4)contamination of food by animal waste
<h3>
Answer: True</h3>
Healthy top soil is needed to grow crops, which in turn some of it becomes food. Erosion is the process in which top soil is carried away by the wind or rain water (depositing it into nearby lakes or streams). Without this top soil, farming becomes more difficult and crop yields likely decrease. In some cases, no crops can be grown at all. An extreme example of soil erosion, specifically wind-driven soil erosion, is the 1930s dust bowl during the Great Depression. This occurred due to over-farming and it led to massive dust storms. In turn, it caused many farmers to leave the area.
