It's all to do with the soil. If the soil is too sandy, rocky, clayey, acidic, alkaline, saline, or shallow, then it's not good for crops. Topography also plays a big role: steep, rolling hills or mountain sides are not good for driving the tractor on! Many areas are also protected by private landowners, state/provincial law, or federal law so that they maintain their natural existence without having to be subject to the plow. Many areas that are not protected, in the author of this answer's opinion, and are turned into crops, should be reverted back to grassland or natural habitat to improve and maintain the integrity of the land.
In agriculture, terraces like the ones shown in this photograph are used to grow crops in areas with high elevations such as
Building level areas for farming in the mountains is called terracing. The Inca were masters of this technique, and the terraces are still used today.
Land that can be used for crops is considered farm land. This land has to be zoned for the purpose of agriculture.
crops are used for fuel
Because they allowed growth (through the use of excess moisture not natural to the native environment) where, historically, growth could not have happened without human intervention. Areas that had low moisture levels and couldn't be used for growing crops, were (and are) now able to grow crops.
In agriculture, terraces like the ones shown in this photograph are used to grow crops in areas with high elevations such as
corn
Geothermal energy is used in some areas.
ANIMALS
They are used to toil or break up the ground so crops can be planted in cultivated soil for better growth. They are used to plant seeds and crops rather than by hand. They are used to weed between rows to help spread fertilizer and to weed the crops. They are used to gather some crops to prepare to sell the crops.
It was used in dry areas to help to grow crops and as a source of water.
It was used in dry areas to help to grow crops and as a source of water.
It is not wise to irrigate crops using seawater. Sea water is very saline and it can kill the plants after a period of prolonged usage.
the laterite soil is used for the plantaion some crops
hydrophonics
When the water subsided, it left behind very fertile soil which was used to grow crops on.
The services that can be used for sprinkler system design are residential areas for home gardening, farmers and nurseries to irrigate or water plants/crops.