A hard, smooth surface (cardboard) reflects sound better than an uneven, soft surface (pillow). This is because the soft surface most of the sound.

Biology 1c cumulative exam i need awsners

The deserts of the sahara and australia are associated with

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?