Answer:
Hello, Levers with mechanical advantage can move large loads with a relatively small amount of effort. They have a high load force to effort ratio. Second class levers always have mechanical advantage.
The smallest unit of many compounds is the molecule or formula unit..
because the molecule is the smallest unit that defines a molecular species. For non-molecular species such as salts etc..
Not really anything at all
Answer:
they have webbed feet to help them swim