Sickle Cell anaemia is an 1) autosomal recessive
2) autosomal dominant
3)Sex linked
4) both 1 and 2​

1

Explanation:

it's an autosomal recessive trait.

answer; i believe that the correct answer is (lung);

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).