D. Were nomads who hunted and gathered
Answer:
<u>Geocentric Model</u>: - this model is Earth Centered
-Retrograde motion is explained by epicycles
<u>Heliocentric Model</u>: - This model is Sun Centered
-Retrograde motion is explained by the orbital speeds of planets
<u>Both models</u>:- Epicycles and deferents help explain planetary motion
-Planets move in circular orbits and with uniform motion
-The brightness of a planet increases when the planet is closest to Earth
Explanation:
Retrograde motion is an apparent change in the movement of the planet through the sky. Ptolemy's model of the solar systems was geocentric, where the Sun, Moon, planets and start all orbit the Earth in perfectly circular orbits. However this perfectly circular orbits around the Earth did not explain the occasional retrograde motion of the planets. In the Copernicus' heliocentric model, retrograde motion of planets is naturally explained. The explanation for retrograde motion in a heliocentric model is that retrograde occurs roughly when a faster moving planet catches up to and passes a slower moving planet.
Answer:
Development.
Explanation:
Development can be defined as the progress of a country as it becomes more economically, technologically advanced and improvements in people's quality of life.
Some of the economic development indicators are demographics, gross domestic product (GDP), unemployment, economic structure, gross national product (GNP), inflation etc.
Basically, development is considered to be a microeconomic element.
Macroeconomics can be defined as the study of behaviors, performance and factors that affect the entire economy. Hence, it focuses on aggregate phenomena such as price level, economic growth, Gross Domestic Product (GDP), inflation, unemployment and national income levels with respect to the central bank, demand or supply shocks, government policies, aggregate spending and savings.
The circumference of circle is 20.096 units
<em><u>Solution:</u></em>
Given that circle has a diameter with endpoints at (10, 8) and (5, 4)
To get the diameter, find the distance between the end points
<em><u>The distance between two points is given by formula;</u></em>
Here the points are (10, 8) and (5, 4)
Substituting the values we get,
Thus the diameter is 6.4 units
<em><u>The circumference of the circle is given by formula:</u></em>
Where "d" is the diameter of circle
Thus circumference of circle is 20.096 units
The most populated region of Australia is the southeastern coast because drops grow much better there and the vast majority of Australia is desert.
