Answer:
Geologists use the following tests to distinguish minerals and the rocks they make: hardness, color, streak, luster, cleavage and chemical reaction. A scratch test developed by a German mineralogist Friedrich Mohs in 1822 is used to determine mineral hardness.
It belongs to the hydrides
Phishing email is an email fraud method in which the attacker or hacker send an email which appears to come from well know and trustworthy websites or persons.
The most significant danger is that email appear to come from a very official company or websites. And it is very easy to be fooled and providing personal information like credit card numbers etc.
Answer:
TRUE
Explanation:
The trees are the primary producers that produces the food on which the consumers are dependent. This forms the base of the ecological pyramid for both energy as well as biomass.
In any biological condition, it can be observed that during its ecological succession from one trophic level to the next, almost 90% of its total energy is lost, and only 10% of its energy is transferred to the successive trophic level.
Similarly, biomass is also comparatively higher in producers like plants and trees than in any other trophic levels.
Thus, the given statement is True.
Answer:
Explanation:
Given
x is a factor
Required
Solve for k
x is a factor means that the polynomial can be divided successfully by x.
In other words, x is a zero of the polynomial.
i.e.
and 
Substitute 0 for x in P(x)
Substitute 0 for P(x)
Collect Like Terms
Divide both sides by 5
