The correct answer is "It decreases". Numerous studies report that birth rate are higher in developing countries in comparison to developed countries. Once a developing country reaches the status of industrialized it is very likely that the birth rate would decrease. Two factors that explain the high birth rates in developing countries are the lack of access to contraceptives and, generally lower levels of education respect to developed countries.
Its not really taller its shorter than the chrysler building.. the answer is 463..
B is the most accurate because it is about gravity, and the moons influence on tides.
A has to do with plate tectonics, C has to do with lunar cycles and orbit, and D has to do with a misconception, because the moon does rotate but only slowly.
I believe the answer is matter due to the fact air does have mass and does take up physical space.