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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.
What does primitive in biology mean?
I wouldn't say that an organism is 'primitive', it's much better to state that the organism is philogenetically old (or older in comparison to other organism). Such statement means that a species has been on earth for a longer period of time than others.
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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
What is it conjunction in I was late for the biology class and they missed the test?
and but - the sentence does not make sense, if YOU were late why did "they" rather than "I" miss the test.
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
Why does a space telescope produce a clearer image then an earth based telescope?
There is less dust in space than earth.
Why do rocks from space not strike us on earth?
if the earth did not have an atmosphere, than many rocks from space would have striked the earth's surface by now.
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.
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 the sun bigger than earth from space?
YES!
Why is it easier to clap your hands in air than under water?
It Is Easier To Clap Your Hands In Air Then In Water Because There Is Alot Of Space Between The Particles. Very Less Particles In The Given Space And Farapart That's Why It Is Easier
