Answer: D
Explanation: it’s obvious tress give off oxygen!
Yes, this is true!
Nuclean plants need to be kept at a relatively low temperature, which means that they need a lot of cooling. The most widely used cooling technique is water circulation (similar to central heating system) and this is why a lot of water is used.
The correct answer among the choices given is option A. For a fusion reaction to happen, matter needs to be in the plasma state. For fusion reaction to happen special conditions should be met to overcome the energy required. One is that the temperature should be high to give atoms enough energy to overcome any resistances. It requires about 100 million Kelvin of temperature. At this point, hydrogen occurs as a plasma.
Answer:
The region between the Appalachians and the Mississippi River became more densely populated between 1790 and 1860. b. Central California was very densely populated in 1861.
Explanation:
