Which is easier to observe, the physical or chemical properties of an object

Physical

Explanation:

It's more apparent since it's more visible

these conditions long with a short growing season made farming difficult.

explanation:

the north has a climate of warm summers and snowy cold winters. the terrain is rocky, hilly, and not good for farming.

lincoln declared that slavery should not be allowed to spread into the new states, and of course this angered the south at the time.