Assuming this is multiple choice, the answer would be "niche". An organism's niche is where that certain organism fits into an ecosystem, or what their part to play is.
In order to create a hydroelectric power plant, you need water, hence the prefix hydro-. Most times, people use dams to block the water, which in a way stores it. When you need to produce electricity, you release some of the water which flows through a turbine making it spin, which then activates a generator to produce electricity.
Because nerves are the transmitters of messages from the brain to the structure, and all major nerves are found in the spinal cord leading out to the rest of the body. If the nervous tissue is damaged then the brain can no longer send messages to those parts of the body, and they an no longer react causint paralysis.
Hope this helps. :)
Answer: Mixture
Explanation:
If there is and unstable element composition of say, pure graphite an un-pure gold then a chemical reaction will most likely be used to separate the two elements.
