Answer:
The answer is Vitamin E or α-tocopherol.
Explanation:
Vitamin E is a <u>fat-soluble</u> vitamin is first absorbed in the small intestine and is then <u>stored at the liver</u>. It is an <u>antioxidant</u> which <u>protects cells from free radicals or reactive oxygen species (ROS)</u>. It can also prevent bad cholesterol from depositing in the blood vessels.
Vitamin E can be <u>naturally found in nuts, seeds, and vegetable oils</u>. As a dietary supplement, it takes the form of α-tocopherol. The RDA depends on the age of the person, as it may range from <u>4 mg to 15 mg per day</u>.
<u>Vitamin E deficiency is so rare</u> that it will only occur if the person has a <u>fat malabsorption illness like Crohn's disease, abetalipoproteinemia</u>, etc. Symptoms of deficiency include <em>muscle weakness, retinal degradation, peripheral neuropathy, and an immunocompromised state</em>.
Okay so northern Africa and the Sahara desert is the best example of desertification.
2 ways humans have contributed to that is: 1) pastoral nomadism 2) little to no settlements to increase water supply
how it impacted the environment: so now the environment there is sandy, only organisms adapted for those extreme environment can live there ex. camel, cactus, etc.,
how it impacted quality of life: quality of life diminished, not enough water to sufficiently feed the populations, people live in extreme poverty, people are moving away, and the climate is very dry and hot, pretty much not a place anyone would want to live
http://eden-foundation.org/project/desertif.html
https://www.sciencedaily.com/releases/2017/03/170314111320.htm
The greatest threats to coral reefs is the rising temperature of the oceans as a result of climate change and the acidification of the oceans due to increased levels of carbon dioxide in the atmosphere which dissolves in the ocean and forms carbonic acid.Aug 3, 2015
C! Because animal cells don’t have a cell wall! Have fun in Science!
Answer:
the number of electrons in it's outermost energy level
Explanation:
if the number of electrons in its outermost energy level is less than 4 that's the ion reacts by losing electrons and is thus the ion is positively charged
is the number of electrons in the outermost energy level is more than 48 react by gaining electrons and thus it is negatively charged
