The large, fine root system close to the surface is able to abosrb water from even a light rainfall in the desert.
a large root system,close to the surface
A small leaf surface and large root system.
Yes
True
An ecosystem can be as large as the Sahara Desert.
No, Saturn is a large gas planet and has no solid surface.
because its roots spred out because the roots sense the water and therfor they extend far away so that they can reach the water The roots would be near the surface because when there is precipitation, it does not penetrate the ground very far. Since there is very little precipitation in the desert a plant would need to maximize the area from which to gather water, hence the very large root system.
Cactus have a large root system to soak up maximal amounts of moisture. They need as much as they can get in the desert with the ground mainly being incredibly dry. The roots have large surface area again to soak up as much moisture as possible.
Cacti are (generally) found in deserts as they have adapted to survive in the desert environment. For example, they have a very low surface area compared to their volume to reduce water loss in the hot desert climate, and also have very large root systems which enable them to gather water from a large radius.
Large Foot: Large surface area of the camels feet allows it to move easily in the desert dune where pressure is inversely proportional to area hence large area gives a smaller pressure for the camel to move easily.
the small intestine
Olympus Mons has likely had many large eruptions over the years. It is the largest observed mountain in the solar system, rising over 80,000 feet from the surface of Mars.