When it comes to energy, saying that something is cleaner than coal means that it does not harm the environment as much as burning coal does and it is usually sustainable. The clean is the same one in the term "clean energy"
The cell membrane helps maintain homeostasis by controlling movement and what goes in or out of the cell.The cell membrane makes itself important by controlling the substances that penetrate the cell, either entering the cell, or leaving the cell<span>.</span>
Remember, diffusion is when molecules move from an area of HIGH concentration to an area of LOW concentration. Therefore, in this example the molecules on the outside, where the concentration is high, will diffuse to the inside of the circle, where the concentration is low.
Answer:
4. Absorb extra fluid between the cells
Explanation:
The nervous system (SN) is a complex system that acts to receive sensory information through nerves, transmit this information via the spinal cord and finally process it in the brain. The SN has three main roles: sensory input, processing and motor output. The SN can be divided into the central nervous system (composed of the brain and spinal cord), and the peripheral nervous system (composed of those nerves located outside the brain and spinal cord). Moreover, the extracellular fluid between the cells comprises four types of fluids: 1-intravascular fluid (blood), 2-interstitial fluid, 3--transcellular fluid and 4-cerebrospinal fluid. The excess of these fluids is absorbed by the capillaries of the lymphatic system.
The answer is C oxygen.
Hope this helps.
