Answer:
The movement of ions or molecules across a cell membrane into a region of higher concentration
From several more prokaryotic cells.
How did stromatolites contribute oxygen to the early atmosphere?
by weathering of rocks
through photolysis
through methane degradation
through photosynthesis
Answer:
by weathering of rocks
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<u>Given:</u>
Present population of bison = 3652
Maximum growth rate = 0.28
<u>To find:</u>
The population of bison after one year.
<u>Solution:</u>
The future population can be calculated with the help of the following formula,
where 
is the future population, 
is the present population, r is the growth rate and n is the number of years.
On substituting the given values in the formula we get,
Therefore, the population size of bison after one year is 4675. The park does not have to control the population because the growth rate is on an average scale.
Answer:
2.67 cells at 500x magnification...
Explanation:
So, four cells are present at 200x magnification and are covering the full diameter of lens. by using a 500x magnification, it means that magnification is increased 1.5 times. So, the number of cells visible will be decreased by a factor of 1.5. So, decreasing 4 cells by a factor of 1.5 means <em>2.66666666667</em> or <em>2.67</em> cells at 500x magnification. Resolution has to be increased by a factor of 1.5 to produce a view-able clear image of cells.
