How do plants affect s crops and livestock supply?

Plants are the mainstay of agriculture. Crops are comprised of plants, and livestock are very commonly herbivorous animals that depend on plants for growth, survival, and health. If plants did not exist on this earth, every living thing known to mankind would not exist either, and that includes humans. Weather that affects crops or any change in climate can negatively (or in some cases, positively) affect supply in terms of food distribution, harvests, etc.