<span>Geothermal electricity takes steam from hot water, and uses it to spin/rotate a turbine. This turbine activates a generator, which then produces electricity. By drilling into the ground and accessing underground resources of steam, that steam can then be piped directly from beneath the ground to the generator unit.</span>
1. B. 2.B 3.C.
1. Fossils is a main supporter of the evolution theory
2. Evolution
3. Lack oh adaptation risk death
Answer;
-PET scan
A PET scan uses radioactive markers in the blood to monitor blood flow and metabolic activity via x-ray
Explanation;
-A positron emission tomography (PET) scan is an imaging test that helps reveal how the tissues and organs are functioning. A PET scan uses a radioactive drug (tracer) to show this activity. This scan can sometimes detect disease before it shows up on other imaging tests.
-A PET scan is used to diagnose certain health conditions, to plan treatment, to find out how an existing condition is developing, and to see how effective a treatment is.
-In a PET scan, a machine detects radiation that is emitted by a radiotracer. A radiotracer consists of radioactive material that is tagged to a natural chemical, such as glucose.
ANSWER: A. The sun is located at the centre of the universe
<span>Ancient cultures knew that unseen energy flows through all living things. Reiki is a system of healing that channels this energy by placing the hands. In recent scientific experiments, medical doctors are studying the correlation between this energy and the functioning of the immune system.</span>
