this ecosystem is very hot and very dry with little or no rain.

desert grassland rain forest forest
how guess the answer can u explain me

http://www.answers.com/desert

Tundra

To determine which ecosystem is hot and dry with little or no rain, you need to consider the characteristics of each ecosystem listed: desert, grassland, rainforest, and forest.

1. Desert: Deserts are known for their extremely dry conditions, with very little rainfall. They often have high temperatures and sparse vegetation.

2. Grassland: Grasslands can have varying levels of rainfall, but they are not typically characterized by extreme dryness or high temperatures. They usually receive more rain than deserts.

3. Rainforest: Rainforests are the opposite of what you described — they are known for their high levels of rainfall and humidity. They are typically hot and tropical, but not dry.

4. Forest: Forests can exist in a variety of climates, including both wet and dry conditions. However, since you mentioned that the ecosystem is "very hot and very dry with little or no rain," a forest would not be the most suitable answer because they can often have higher moisture levels.

Based on this information, the most appropriate answer would be the desert ecosystem. Deserts are characterized by their extreme heat, low precipitation, and minimal vegetation.