<u>Answer:</u>
An example situation of artificial selection is "More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory".
<u>Explanation:</u>
- The process of breeding animals to acquire the desired characteristics by the external means other than natural selection and behavior of animal itself is called as artificial selection.
- The first artificial selection was carried out by Darwin when he mated penguins that would have a higher chance of breeding.
- The practice of artificial selection was existing in human civilization a long time ago.
- This process was used to use wild animals and domestic animals in battles and other household works.
Answer:
D: All of these options
Explanation:
The p-values for the coefficients indicate whether these relationships are statistically significant.
A low t value shows that your hypothesis is true
Multicollinearity means when independent variables in a regression model are correlated.
The correct answer is the fourth option. The magnification of a specimen viewed with a compound light microscope that has an objective power of 10x and an ocular lens power of 5x is equal to 50x. Magnification is equivalent to the product of the objective power and the ocular lens. Ten times five is fifty.
Answer:
The arc is 6.4 units long.
Explanation:
For a circle of radius R, the circumference is given by:
C = 2*pi*R
If we have a section of this circle defined by an angle θ (such that this section makes an arc), the length of that arc is:
A = (θ/360°)*2*pi*R
and 2*pi*R is the circumference, then we can write the length of the arc as:
A = (θ/360°)*C
qsIn this case, we know that the circumference is equal to 8 units, and the arc has an angle of 288°
Then the length of that arc is:
A = (288°/360°)*C = (288°/360°)*8 = 6.4
The arc is 6.4 units long.
