Reaction and response loop. The plant is reacting to the amount of water, therefore it begins to die from there being less of it. The response from the plant dying means the answer. I'm not sure about this, but here is my answer that I would give.
These are known as Hormones. Hormones are chemical messengers that are released in one tissue normally endocrine glands for example, adrenal glands, pituitary glands, and transported in the blood stream to alter the activities of specific cells in other tissues. Hormones serves as messengers, controlling and coordinating activities or processes such as growth, metabolism and fertility in the body.
Primary consumers are represented with a “C.”
Muscles and tissue will not be able to grow properly.
