this behavior has developed due to natural selection, since an effective dance to attract a mate and produce
a) fitness
b) mating-calls
c) nutrition
d) offspring

The prevailing climatic type in the southeastern part of the usa, western europe, southern brazil and northen argentina is the mid-latitude or: a)humid temperate b)humid cold c)semiarid moderate dry d)summer savanna.

Witch layer of the atmosphere has the most air pressure

Where does the availability of water pose the greatest problem