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Why might you use a plastic replica of a cell in biology class instead of real cells?
The replica will most likely be more stable (less fragile) than a cell, it will keep it's shape - and the structures inside should remain visible. Also it is much easier to make a replica bigger than a normal cell - making it easier to see.
Biology that unites all of the diverse fields of biology as a single science?
Not a very clear question, but I will try. Biology is biology. Yes there are many diverse topics in the field of biology, but they are all "united" under the field of biology. If you were looking for a single theory that unites all the disciplines of biology, that would be the theory of evolution... that much has been more eloquently put by T. G. Dobzhansky: http://en.wikipedia.org/wiki/Nothing_in_Biology_Makes_Sense_Except_in_the_Light_of_Evolution
Why is it easier to extract DNA from strawberries than from humans?
The cell walls of strawberries are easier to break down, allowing for easier access to the DNA inside. Additionally, strawberries have more DNA per cell compared to humans, making it easier to extract a larger amount of DNA from them.
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Is raw meat easier to digest than cooked meat?
Raw meat is generally harder to digest than cooked meat because cooking breaks down the proteins and fats in meat, making it easier for our bodies to digest and absorb nutrients.
Is earth easier to fly on than space?
Yes
Is earth similar than space?
yes earth is much different than space because space has no air or water.
Why is it easier to use solar power in space than it is on the Earth?
In space there is not air to diffuse many of the sun's beams or clouds to block sun beams, you simply get direct sunlight from the sun.
Can the international space station be returned to earth for repairs?
No. It would be too expensive and impracticable. Any repairs required are easier and cheaper to do in space. It would probably be cheaper to build an entirely new Space station than to return the old one to Earth, repair it and put it back up into Earth orbit.
How is earth different from space?
Space is different from earth because space has no gravitation, earth has gravitation
Would it be easier to lift a truck on the moon or on the earth?
It would be easier to lift a truck on the moon because the moon has weaker gravity compared to Earth, approximately 1/6th of Earth's gravity. This means you would need to exert less force to lift the same truck on the moon than on Earth.
How space is harder to fly on than earth?
Because earth has a lot of gravity
Why does a brick weigh more on earth than it does in space?
More gravity on Earth.
Is Hubble telescope bigger than earth?
No. The Hubble Space Telescope was built on Earth and launched into space. It is about the size of a bus.
Is the sun bigger than earth from space?
YES!
Why is it better to observe the sky from space than from earth?
Earth has an atmosphere that gets in the way of us seeing everything that's out in space.
Why does it take less fuel to launch a space shuttle from moon than from earth?
To launch a space shuttle (or anything) you have to overcome gravity. The gravitational attraction of the moon is tremendously less than that of the Earth. The moon is much smaller than the Earth.
