Crash Course History of Science Episode #22:
Darwin and Natural Selection
1. In Natural Theology what were the 4 aspects of creation?

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided