In this relationship, the barnacles derive benefit. there is not benefit or harm to the whale. this relationship is an example of

Commensalism

Explanation:

In nature, there are many kinds of relationships that are formed between animals and plants. These relationships are given certain names, depending on if both species benefit, or one benefits and the other suffers, or if they both are unaffected, one example of a relationship found in nature is called commensalism.

Commensalism is a kind of relationship that is seen between whales and the barnacles that are attached to them. In this relationship, the barnacles benefit greatly because, as the whale swims through the ocean, the barnacle constantly is exposed to a fresh source of nutrition. The whale however, is unaffected by having the barnacle attached to it.

a. is the answer because they are not shared

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.