What is ecology?
the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
Explanation:
The correct answer for the question that is being presented above is this one: "d. all of the above." Modernization changed agriculture since the Great Leap Forward by having no more communal farms, increased production, <span>contract responsibility system.</span>
Here are the following choices:
<span>a.
no more communal farms
</span>b. increased production<span>
c.
contract responsibility system
d.
all of the above</span>
The NAFTA (North American Free Trade Agreement) is the agreement that has lowered trade barriers between Mexico and the rest of North America. It was signed January 1, 1994.
Answer:
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Explanation:
Answer:
d). It is easier to make a large reflecting telescope than a large refracting telescope.
f). A reflector can collect more light than a refractor.
Explanation:
A telescope is a device that is used to observe distant objects by the use of lenses and mirrors. It is also used to observe different distant objects by their reflection, absorption, emission or the reflection of the electromagnetic radiations.
Most of the professional telescopes are reflectors because :
1. The reflected telescope is able to receive more of the light when it reflects all the light falling on surface. And it is easier for making a large telescope rather then making large lenses for the refracting telescope. So it is easier to make large reflecting telescope than a large refracting telescope.
2. A reflected telescope receives all the wavelength of the light and it reflects all the light falling on the surfaces where it is refracted telescope that contains lenses cannot absorbs all the light and causes the chromatic aberration.
