Answer:As an ice cube melts, its shape changes as it acquires the ability to flow. However, its composition does not change. Melting is an example of a physical change .
Explanation:
The plants of this ecosystem were influenced by the change of abiotic factors (climate).
The plants who had these specialized structures that have helped them conserve water and adapt to these new environmental conditions were more successful, and left more offspring.After several generations, the specialized plants became more prevalent.
Since there was a selection of successful individuals trough generations, we can conclude that this was due to the working of the evolutionary mechanism called the natural selection.
P= 1.50 atm
V= 3 L
R= 0.08205<span> L∙atm/mol∙K
T= 300 K
n= ?
we all this information, we can tell that we need to use ideal gas formula
PV= nRT
if we rearrange the formula for n, we get--> n= PV/ RT
let's plug in the values.
n= 1.5 x 3/ (0.08205 x 300)= 0.18 moles
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