What event marked the end of the mesozoic era and the beginning of the cenozoic era

(apex answer) - an asteroid impact

Which one of these is a involving in both sexual and asexual reproduction

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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?