Deserts are characterized by low precipitation, high temperatures, and sparse vegetation. High humidity is not a characteristic of desert ecosystems.

Cacti have adapted to conserve water by storing it in their thick, fleshy stems. Palm trees, oak trees, and maple trees are not desert plants and do not have this adaptation.

Camels have adapted to extreme temperatures by having a thick coat of fur that insulates them from the heat and by being able to store water in their humps.

Climate change, deforestation, and pollution are all threats to desert biodiversity. Climate change is causing deserts to become hotter and drier, which is making it difficult for plants and animals to survive. Deforestation is removing habitat for desert species. Pollution is contaminating the air, water, and soil, which is also harming desert species.

The Sahara Desert is the largest hot desert in the world, covering an area of over 9 million square kilometers.

The Antarctic Desert is the coldest desert in the world, with average temperatures below freezing for most of the year.

There are three main types of deserts: hot deserts, cold deserts, and coastal deserts. Temperate deserts do not exist.

The Namib Desert is a coastal desert located in southwestern Africa. It is the oldest desert in the world and is home to a variety of unique plants and animals.

The Antarctic Desert is a cold desert located in Antarctica. It is the largest desert in the world and is home to a variety of unique plants and animals.

The Sahara Desert is a hot desert located in northern Africa. It is the largest hot desert in the world and is home to a variety of unique plants and animals.

The Antarctic Desert is the largest cold desert in the world, covering an area of over 14 million square kilometers.

The Namib Desert is the largest coastal desert in the world, covering an area of over 81,000 square kilometers.

Cold deserts are characterized by low precipitation, extreme temperatures, and sparse vegetation. High humidity is not a characteristic of cold deserts.

Coastal deserts are characterized by low precipitation, sparse vegetation, and high humidity. Moderate temperatures are not a characteristic of coastal deserts.

Climate change, deforestation, and pollution are all threats to desert ecosystems. Overgrazing is not a threat to desert ecosystems.