Answer:
A. first class lever
Explanation:
the fulcrum is in the middle of the effort and the load.
The main difference between a fruit and vegetable is what part of the plant it comes from.
A fruit is scientifically defined as “the mature ovary of a flowering plant that is edible.” The fruit is the ovary, the seed or seeds it encloses, and any parts associated with the ovary.
There is no precise/scientific definition for vegetable, but the basic definition is “the edible root, tuber, leaf, stem, seed or flower of a plant.” A vegetable is a plant or that part of a plant which is edible, and does not necessarily have a role in the plants reproductive cycle.
The answer is viruses change their form when the immune system knows how to kill it and thats how they trick the immune system and viruses are much smaller than bacterias