Mutual protection, support, trade and company.
Communities are expected to change naturally over long periods of time because the environment changes.
The word long is a noun as a word for a long period of time or duration, a position in a securities or commodities market, and a clothing size category for tall people; a word for a thing.The noun form of the verb to long is the gerund, longing.The noun form for the adjective long is longness.A related noun form is length.
People release oxygen every minute, for as long as they live, and even for a time afterward. Living people release oxygen in the form of carbon dioxide. Much more importantly for the living, people take in and process oxygen all the time, in the form of O2.
The word long is a noun as a word for a long period of time or duration, a position in a securities or commodities market, and a clothing size category for tall people; a word for a thing.The noun form of the verb to long is the gerund, longing.The noun form for the adjective long is longness.A related noun form is length.
rocks
A change in plant communities through time is Succession.
The same way they do now. Soap, in some form, has been around a long time. Water even longer.
a long, long time
The word "longer" is the comparative form of the adjective "long".The word "long" is an adjective, a verb, and a noun.The noun "long" is a word for a long period of time or duration; a position in a securities or commodities market; a clothing size category for tall people; a word for a thing.The noun form for the adjective long is longness.A related noun form is length.
a long long time
a long time ago
Hunter-gatherer communities were typically nomadic, moving frequently in search of food and resources. They stayed in one place for only short periods of time before moving on to new areas.