Please help I really need but this time I'm fr I don't have much time ill mark brainliest

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

This drawing shows a human body system. what is the primary function of this body system?