The answer is D! living things are made up of units called cells.
Air pollution is a type of environmental pollution that affects the air and is usually caused by smoke or other harmful gases, mainly oxides of carbon, sulphur and nitrogen. In other words, air pollution is the contamination of air due to the presence or introduction of a substance which has a poisonous effect.
Air pollution can also cause long-term damage to people's nerves, brain, kidneys, liver, and other organs.
Answer:
c. is a biotic factor within an ecosystem
All the above is correct.
B. cerebellum, the cerebellum is responsible for all these as well as maintaining muscle tone
