When 1 gram of Ca is burned, 1.4 CaO compound decreases. The search for the right combination of elements in CaO compound mCa / mO

This drawing shows a human body system. what is the primary function of this body system?

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?