Which statement is a scientific law? Scientists use genes to explain why evolution happens. Genes are long patterns that are similar to computer codes. A person’s traits are controlled by different forms of a gene. The discovery of genes changed how scientists think about life

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.