Which is the BEST explanation why photosynthesis is so important to people and to all life on Earth? a Photosynthesis produces the oxygen and food energy that all non-plant organisms require to survive.

b Only plants (and some bacteria) have chloroplasts and can photosynthesize, which produces oxygen that all non-plant organisms need.
c Plants are the original producers of food for all other life forms; without plant life, there could not be animal life.
d Many people take plants for granted and don’t realize how essential they are, so it is important that photosynthesis take place even when no one notices.

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.