From the reaction of 8g of hydrogen with oxygen, 70g of water have been formed. How much oxygen has been consumed in this reaction?​

Q: a pair of homologous chromosomesa) always has the same genes and the same allows b)always has the same genes c)always has the same alleles d)never has the same genes

How do diseases caused by bacteria and diseases caused by viruses react to antibiotics?

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.