The answer is; cell surface receptors that are recognized as antigens by the recipient's immune system.
Therefore the organ is attacked as a foreign substance . This is why organ transplants are given by the closest family member to reduce the antigen variability that causes transplant rejection. Tissue typing is done to ensure that the organ or tissue is as similar as possible to the tissues of the recipient.
I believe that the correct match will be;
Prominences- A
Sunspots - B
Solar flares - C
Convection -D
Prominence is a large, bright feature extending outward from the Sun's surface. Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's hot outer atmosphere, called the corona.
Sunspots are darker, cooler areas on the surface of the sun in a region called the protosphere. Solar flares are large eruptions of electromagnetic radiation from the sun lasting from minutes to hours.
<span>Tariffs shield new industries in the early stages of their development from the competition of more mature rivals.</span>
Spider monkeys live in a <span>tropical rainforest
A savanna is a grassland with VERY FEW trees.
Polar ice is like Antartica.
The desert is all sand, no trees.
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The location is important with the wind energy because if you install the turbines in a place where there is not alot of wind you wont get any energy
