Which two types of matter are chemical pure substances

element and compund

Explanation:

an element is the most basic substance that cannot be decomposed into anything simpler

an compound is a substance that is formed when two or more elements combine in constant ratio chemically

i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.

the bald eagle got 50 because everything gets 10% of what they consume and since 50 is ten % of 500 hundred that means the   grasshopper had to have consumed a plant with 5,000 calories of energy