Why does the altitude decrease in the troposphere?

As a small change in a person's dna can cause a genetic disorder

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

Question 17 (1 point) where does penicillin come from? a. it is a chemical that man invented b. it is a fungus c. it is a toxin made by other bacteria d. it was discovered in archaebacteria