As guard cells become turgid, the stomata fully open and gases and water vapor are allowed to pass through it. When the plant is full of water, the guard cells fill up to become plump and turgid, making the stomata open so gases can be exchanged for photosynthesis. When the plant is short of water the guard cells lose water and become flaccid, making the stomata close, this helps stop too much water vapor escaping.
Resources will become scarce, and competition will rise. This can present in physical, political, or social ways. Once the population crosses the balancing point beyond carrying capacity, a number of things can happen that "correct" the problem, including out migration, starvation, disease, and conflict. Often more than one of things happens at the same time.
A cell is a membrane-bound structure that occurs as a functional independent unit of life (such as in unicellular organisms, e.g. bacteria, protozoa, etc.), or as the structural or fundamental unit in a biological tissue specialized to perform a particular function in multicellular organisms (e.g. plants and animals).
