Moisture Rich tropics

The sun’s heat at the tropics not only warms air, it also evaporates ocean water into watervapor that disperses into the air. The rising moisture-laden warm air rapidly expands andcools as its pressure reduces (since atmospheric pressure is highest at the earth’s surfaceand decrcases with height), and its moisture condenses back into water, falling as …

Moisture Rich tropics Read More »

Common ocean currents

The planetary wind system plays an important role in the creation of theoceans’ surface currents. In general, these currents follow the enormouscirculation loops around the oceans, delevering a huge supply of heat fromthe equator to high latitudes. Most of the currents’ heat is lost along thewestern boundaries of oceans, so that time they make their …

Common ocean currents Read More »

when it blows

In part, global wind patterns are caused by the way in which the sun’s rays warm theearth. The part of the earth that receives most of the sun’s heat is the tropics—the regionabout the equator that lies between the tropics of Cancer and Capricorn. In the tropics thesun’s rays hit the earth almost at right …

when it blows Read More »

The hairy hyenas

Large animals often die in the desert—of thirst, hunger, heat stress, or all three. There are always scavengers, however, to feed off the flesh and crunch thebones. Of the three main species of hyena, best adapted to very dry habitats is the brown hyena (Hyaena brunnea). Hyenas are much more actively predatory than their popular …

The hairy hyenas Read More »

A desert Fox

Desert dogs and foxesTwo members of the dog group that survive in varied habitats, including drygrassland and scrubby semidesert, are the coyote (Canis latrans) and the dingoAtlas of the world’s deserts 170(Canis dingo) of Southeast Asia and Australasia. The latter is tawny yellow incolor and can hardly bark, only howl. Sometimes regarded as a subspecies …

A desert Fox Read More »