1. An atom of which element has 37 protons, 48 neutrons and 1 valence electron?

The idea of spontaneous generation was disproved by in a experiment involving jars of meat

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?

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million