What do scientists do if the results of an experiment do not support the hypothesis?

Simply put, a hypothesis is supported when data proves the hypothesis to be true or valid. In contrast, a hypothesis can be refuted by data that proves it to be false or incorrect.

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.