Question 2:
<span><u>slow, steady evolution of a small isolated population</u></span><span>
This evolutionary theory suggests that a species slowly and continuously evolved over a long period of time. This selection and variation happens more gradually. It is hard to notice over a short period of time. The change is slow, constant and consistent. In punctuated equilibrium, the changes come in spurts. There are periods wherein a huge change occurs and there are also periods with very little change. The mutation is at random. Genetic drift is the change in the frequency of a gene variant due to a random sampling of organisms. </span>
Answer:
d). It is easier to make a large reflecting telescope than a large refracting telescope.
f). A reflector can collect more light than a refractor.
Explanation:
A telescope is a device that is used to observe distant objects by the use of lenses and mirrors. It is also used to observe different distant objects by their reflection, absorption, emission or the reflection of the electromagnetic radiations.
Most of the professional telescopes are reflectors because :
1. The reflected telescope is able to receive more of the light when it reflects all the light falling on surface. And it is easier for making a large telescope rather then making large lenses for the refracting telescope. So it is easier to make large reflecting telescope than a large refracting telescope.
2. A reflected telescope receives all the wavelength of the light and it reflects all the light falling on the surfaces where it is refracted telescope that contains lenses cannot absorbs all the light and causes the chromatic aberration.
Answer:
3 and 4
Explanation:
Why?
4 has no value nor distance record such as km, m, miles, etc.
This is the same as 3.
The correct answers are:
- half;
- 415;
South America is a continent that has a steady rise in its population. It has around 415 million people and if the trend of rise continues, very quickly the continent will reach the mark of half a billion people.
The biggest, and also the most populous country in South America is Brazil. Brazil has an estimated population of around 209 million people, and it is growing population. Brazil's population accounts for approximately half of the population on the continent.
<span>A major plate is one that has an area greater than 20 million kilometer squared and a minor plate is one not greater than 20 million kilometer squared and larger than 1 million kilometer squared. Minor plates are not usually shown on maps of major plates.</span>
