Which part of the brain connects the right and left hemispheres allowing communication between the two?
cerebral cortex
corpus callosum
medulla oblongata
brain stem

The distant ancestors of tigers may have had bodies without stripes. use the theory of natural selection to explain how tigers may have evolved to have stripes.

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

Do plants make food in their stems flowers roots or leaves?