2025年1月17日 · Desert, any large, extremely dry area of land with sparse vegetation. It is one of Earth’s major types of ecosystems, supporting a community of plants and animals specially adapted to the harsh environment.

2025年1月17日 · Desert - Climate, Ecosystems, Adaptations: Deserts are varied and variable environments, and it is impossible to arrive at a concise definition that satisfies every case. However, their most fundamental characteristic is a shortage of available moisture for plants, resulting from an imbalance between precipitation and evapotranspiration.

2025年1月17日 · Desert - Flora, Fauna, Ecosystems: In most cases floristic links among desert regions are indicated by the presence of related species; it is unusual for identical species to be found in more than one region, except where they have been introduced by humans.

2025年1月17日 · Desert - Adaptation, Ecosystems, Communities: Desert plants and animals have many peculiar adaptations that enable them to survive long periods of moisture shortage and to take maximal advantage of short, infrequent wet periods.

When people think of a desert, they usually think of a sandy, hot, and dry place. But there are other types of deserts as well. A desert is any large region that gets very little rain each year. Very few plants or animals live in desert areas.

2024年12月28日 · Sahara, largest desert in the world. Filling nearly all of northern Africa, it measures approximately 3,000 miles (4,800 km) from east to west and between 800 to 1,200 miles from north to south and has a total area of some 3,320,000 square miles (8,600,000 square km).

Occupying some 20 percent of the Earth’s surface, deserts are one of the planet’s main types of ecosystems. They may or may not be hot, and their land features range from windswept expanses of loose sand to rugged mountains, bare rock, and plateaus strewn with gravel and boulders.

The largest deserts are vast, harsh areas characterized by extremely dry conditions, sparse vegetation, and little or no precipitation. The majority of Earth’s hottest deserts are found on the western sides of continents

2024年12月28日 · What is the climate of the Sahara Desert? How did the Sahara get its name? Can plants and animals survive in the Sahara Desert? Do people live in the Sahara Desert? What is the modern economy of the Saharan Desert like?

2025年1月2日 · Higher elevations support trees adapted to more-temperate climates. Desert bighorn sheep, mule deer, collared peccaries (commonly known as javelinas), mountain lions, gray foxes, and coyotes make their homes in the desert. Other typical residents include desert tortoises, Gila monsters, tarantulas, scorpions, and a variety of lizards and snakes.