Loss of lung tissue elasticity is characteristic of

Emphysema

Explanation:

Emphysema is characterized by the loss of lung tissue elasticity. Normally, lungs are like sponges, they are springy and with small holes. But people with emphysema have tissue damage in the lungs, and the holes are a lot bigger, which affects the elasticity of the lung tissue. Because of the big spaces in between, instead of expelling air, a lot gets trapped in the lungs because it cannot push it out. That's why people with emphysema have shortness of breath because they cannot exhale properly.

preservation because he preserves part of the land and preserves means save

explanation:

the correct answer is - d. china has a large and growing population.

the fact that china has a large (the biggest) population, and it is still growing, doesn't hinder the agriculture production in the country. in fact, it can for increased production in the agriculture, since there's more labor force, as well the sheer mass of people produces lots of scientists that come up with new inventions as to how to improve this sector. nice example is the inner mongolia region in china, in general dominated by the gobi desert, but few scientist came up with a nice idea as to how to make the region productive by using plants that are very resistant to droughts, so lots of people have been employed, and the region is becoming greener and greener each year, and the production of food in this region is also increasing.