If you are checking a cell for a zero value and the cell is blank, the test evaluates to true. For example, if you have the following formula in cell A1 =IF(B1=0,"zero","blank") and B1 is blank, the formula returns "zero" and not "blank" as expected.
If the range might contain a blank cell, you should use the ISBLANK function to test for a zero value, as in the following example: =IF(ISBLANK(B2),"blank",IF(B2=0,"zero","other")) Note that the above formula returns "zero" if there is a zero value in the cell, "blank" if the cell is blank, and "other" if anything else is in the cell.
You must always use the ISBLANK formula first before you test for a zero value. Otherwise you will always return a "true" for the zero value, and never get to the test for the ISBLANK formula.
Besides cell walls, features often found in plant cells but not in animal cells are: <span>· Chloroplast- specialized organelles in which light energy is converted to chemical energy during the photosynthesis(chloroplasts contain chlorophylls a and b-green color of the plant)
</span> <span>· Vacuole-central organelle filled with fluid for storing food (sometimes it is found in animals but rare)</span><span><span>· </span>in animals but rare)</span>
<span><span>· </span>Starch-energy storage of plants (it is glycogen in animals)</span> <span> </span>
<span>a)Stem cells must always be provided by a donor who is financially compensated.</span>
Yes, the planet obeys the Kepler's Second Law. It is because it moves at equal time of one month at the same distance.
The answer is; D
Carbon dioxide and methane are potent greenhouse gases. They cause heating of the lower atmosphere, by trapping sunlight, that results to climate change. Due to the higher melting and boiling temperatures of phosphorus, it is rare that it occurs as gas in room temperatures. Phosphorus, therefore, does not pose a great threat of climate change.
