What is communicate and why do we communicate​

The definition I put below answers both of your questions, hope this helped!

Explanation: Communication is the act or process of using words, sounds, signs, or behaviors to express or exchange information or to express your ideas, thoughts, or feelings to someone else.

when it's short and dry.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.