The world’s largest hot desert, the Sahara, is a subtropical desert in northern Africa. The Sahara Desert is almost the size of the entire continental United States. Other subtropical deserts include the Kalahari Desert in southern Africa and the Tanami Desert in northern Australia.

2023年10月19日 · The four main types of desert include hot and dry deserts, semi-arid deserts, coastal deserts, and cold deserts. In hot and dry deserts , also known as arid deserts , the temperatures are warm and dry year-round.

2024年4月29日 · Construct a diagram illustrating how El Niño and La Niña form and how these influence weather in different locations on Earth. Question 4 explores how Earth’s physical systems have changed the landscape of the Namib Desert over time.

2024年12月9日 · Death Valley, a desert in the U.S. states of California and Nevada, is so hot and dry because it is in the rain shadow of the Sierra Nevada mountain range. The Tibetan Plateau, a rain shadow in Tibet, China, and India has the enormous …

2023年10月19日 · In a desert ecosystem, a mouse that eats seeds and fruits is a primary consumer. In an ocean ecosystem , many types of fish and turtles are herbivores that eat algae and seagrass . In kelp forests , seaweeds known as giant kelp provide shelter and food for an entire ecosystem .

2024年9月30日 · Bare Earth: occurring largely in Earth’s polar regions, bare earth includes tundra, a type of cold desert with sparse vegetation. Temperate Broadleaf and Mixed Forests: this . biome may include oak, beech, and maple trees; in contrast to tropical forests, biodiversity here is usually concentrated near the forest floor

by “seas” of desert scrub and grasslands. “Since the last glaciation, these forested mountain ranges have become relatively isolated from each other,” scientist Peter Warshall says in an article for the USGS. The expanding scrub and grasslands have “limited genetic interchange between populations.” This bioregion is unique on the ...

2024年9月27日 · A dune is a mound of sand formed by the wind, usually along the beach or in a desert. Dunes form when wind blows sand into a sheltered area behind an obstacle . Dunes grow as grains of sand accumulate .

2023年11月29日 · The lithosphere is the solid, outer part of Earth.The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth’s structure.It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below. Although the rocks of the lithosphere are still considered elastic, they are not viscous.

2025年1月31日 · A rainforest is an area of tall, mostly evergreen trees that receives a high amount of rainfall.Rainforests are likely Earth’s oldest living ecosystems, with some surviving in their present form for at least 60 million years.They are incredibly diverse and complex, with more than half of the world’s plant and animal species calling rainforests their home—even though …