It is many years in the future. The shoreline waters have remained shallow. What prediction would you make about the bird population in the area?

A) Within the population, the average leg length has increased over time.
B) Within the population, the range of leg length has remained constant over time.
C) According to Darwin, variation exists so we would expect a variety of leg lengths in the population.
D) The increase in long-legged birds led to increased competition and the number of birds dropped dramatically.

answer : haversian

[explanation: -(compact bone is organized as parallel columns, known as haversian systems, which run lengthwise down the axis of long bones. these columns are composed of lamellae, concentric rings of bone, surrounding a central channel, or haversian canal, that contains the nerves, blood vessels, and lymphatic system of the bone)]

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.

i think the answer is a.keratin is the pigment responsible for skin color.