This because ice is less dense than water of particular temperature range. Water reaches its maximum density at 4 degrees. Ice is important especially for aquatic life in the polar regions. Polar bears give birth and hunt on sea ice and they need it to travel from one region to another. The ice edge in coastal areas is an important feeding ground for the walrus that uses the ice as diving platforms to feed on clams on the sea floor. Ice algae grow at the porous bottom of sea ice and form the base of the unique marine food web connected to sea ice
Conservationists occasionally light forests on fire to control wild fires. By occasionally burning material (like leaves, branches, etc), those materials cannot build up and cause large and uncontrollable fires later.
The mouth of a large river, where the river meets the sea
<span>The answer to this question would be: a male inherits only one allele of the X-linked gene controlling hair color
Tortoiseshell phenotype appears when a cat has two different X-linked gene that controls hair color. This result as a combination of hair color. Male cat sex gene is XY. Normally male cat only has 1 X gene, thus only have 1 color and can't have tortoiseshell phenotype unless there is pathological multiplication in X gene.</span>
I think this is an example of competitive exclusion principle. Competitive exclusion principle is a proposition that two species competing for the same limiting resource can not coexist at constant population values.For Example the Red squirrel is native to Britain but its population has declined due to competitive exclusion, disease and the disappearance of hazel coppices and mature confer forests i law land Britain.
