Organic soils composed of fine black material of sticky consistency formed in former glacial lakebeds are called:

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

How can scientists test their ideas about the origin of the universe if they can't physically interact with or study?

What is the difference between bacterial infections and viral infections?