How are grains and vegetables alike and different

A fruit is the mature ovary of a seed plant, usually developed from a flower. Fruits have seeds so they further the reproductive cycle. A vegetable is a plant or that part of a plant which is edible, and does not necessarily have a role in the plant's reproductive cycle. While most vegetables and fruits are easy to distinguish and classify, some are still ambiguous as to whether they are a vegetable or a fruit. Tomatoes, olives and avocados are often considered vegetables, but are actually fruits.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .