What type of seashore has the most diversity

The correct answer is: rocky seashore.

A rocky seashore is an area (an exposed or sheltered area) of the seacoasts where solid rock predominates,  (it also have boulders and pebbles). Rocky seashores are rich environments, meaning that many plants and animals are adapted to live in such habitat. It is challenging place to live, because of the continual cycle of changing tides.

the backbone of the dna and rna compound is sugar phosphate.

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.