Membrane is the answer i think
The correct answer is A. Is that which benefits others while causing a disadvantage to the individual.
Explanation:
In biology, altruistic behavior occurs as one organism actions benefit other organisms either because these actions increase the reproductive fitness or the chances an organism survives and prevails over time. Additionally, altruistic behavior implies there is a disadvantage for the organisms acting in the benefit of others. For example, wolves or similar animals take food to those that did not participate in hunting, which means they help other wolves to survive on their own cost as this means less food for those that hunted. According to this, altruistic behavior "is that which benefits others while causing a disadvantage to the individual".
In short, because the UV rays damage skin cells, which increases the risk of a mutation possibly leading to skin cancer.
Hope this helps.
Polar.
Polar means that it has a negative pole and a positive pole
Type 2 diabetes has 2 causes: genetics (mutation in a gene or genes) and/or lifestyle poor choices (overweight, etc.), whereas AIDS is a result of being infected by a virus called HIV (human immunodeficiency virus). There's also a huge difference in how they are treated. Type 2 diabetics take medicine to help them monitor their sugar levels, they have to be careful about their diet and they have to exercise. HIV/AIDS patients have to take medicines that work to try and keep the HIV virus from replicating in their blood (T-cells) and to avoid getting sick - their immune system is seriously depressed.
