Question 1
for a wind farm to be effective, it needs to be in a place with
constant wind
no wind
high average wind speeds
low average wind speeds
2 points
question 2
which statement about energy generated from wind is true?
wind is free "fuel," and government taxes on its use are lower than those on fossil fuel use.
wind power gives off no greenhouse gases, but some people feel it spoils the view of the landscape.
wind power uses more water than coal power plants, but it is a far safer power source for wildlife.
wind power is abundant everywhere, and battery storage of excess power is very inexpensive.
2 points
question 3
from where does geothermal energy come?
from deep within the earth
from nonrenewable energy sources
from the energy captured from the sun
from steam
2 points
question 4
what is one benefit of using tides for energy?
increased carbon dioxide production
unlimited energy
reduced greenhouse gases
alteration to tides in area
2 points
question 5
tides can be used to convert kinetic energy into
electrical energy
potential energy
chemical energy
nuclear energy
2 points

1- Option (A)

2- Option (B)

3- Option (A)

4- Option (C)

5- Option (A)

Explanation:

The wind energy is one of the most efficient uses of energy as it does not create any kind of pollution. There occurs no emission of greenhouse gases that are responsible for the rise in global temperature. Whereas it is helpful in the conversion of wind energy into electrical energy. It is inexpensive and renewable and very favorable at the site where there is constant wind.

Geothermal energy is defined as the energy that is obtained from the interior of the earth. It is very widely used and it is clean as well as cost-effective. There are abundant geothermal energy.

Tidal energy is a type of renewable energy which is very useful in the production of electricity as it converts kinetic energy into electrical energy. The tidal energy is more favorable in the region where there is constant fluctuation of tides, in which the blades (turbines) are used for the production of electricity.  It emits no green house gases.

Thus, the correct answers are mentioned above.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation:

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.