<u>Answer:
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Subsistence farming is the level of crop output from a given level of input.
<u>Explanation:</u>
- Farmers grow "food crops" to feed themselves and their families. There will be little or no surplus trade as they get output for whatever input.
- This process is called subsistence agriculture or subsistence farming. They raise the livestock for their own’s use but not for any trade activities.
- For example: nomadic people raise a cow to provide milk to their own family.
- They give sufficient and necessary food for the cow an get the required quantity to suffice their family.
Physical weathering is most active where temperature and rainfall are both. low. Chemical weathering is most active in regions of high temperature and rainfall. Most world. regions experience a combination of both physical and chemical weathering.
A city that has a problem with smog is most likely a MDC and is experiencing it due to heavy air pollution. <span />
When they are all close, they are called clusters
The entire United States and the rest of the world serve as the hinterland for all of the following cities except Tucson.