Answer:
3.
Diversified economy ==> A nation with several climate zones exports almonds, cranberries, corn, wheat, and peaches.
Specialization ==> A nation rich in precious gem/stones just exports diamonds to be made into necklaces, rings, and other jewelry.
Single-resource economy ==> A nation with many pineapple plantations exports fresh pineapples, canned pineapples, and pineapple products.
Explanation:
Each of these economies differ from each other greatly.
Answer:
Maritime Polar air masses are cool, moist, unstable thus found over Arctic basin and greenland ice caps.
Explanation:
- Air mass is the volume of air defined by temperature and water vapor. Covering hundred and thousands of miles. Cooler are being found over the arctic.
- They move southwards along the Rockies into the plains then eastwards. These air masses collect warm and mist winds, originating in north Atlantic. The center of the air mass has high pressure and surrounded by lower air pressure at higher latitudes.
- Antarctica and arctic circle are dominated by such air masses
The doppler effect changes the wavelength of the light emitted, depending upon whether source is moving away or coming towards the detector.
Doppler effect in light is actually a relativistic effect (caused due to relativistic time dilaton and can be explained by special theory of relativity) but somewhat similar to the one which happens in sound waves. This effect has nothing to do with the bending in spacetime.
When the source is moving away from the detector, the wavelength of the light emitted from the source appears to be increased as seen by the detector (think of a wave being stretched), as a result the frequency decreases (since, speed of light is constant in all frames). Due to this decrease in frequency the light emitted from the source appears more red (since red color is on low frequency side in the electromagnetic spectrum) compared to the situation when source was at rest.
Vice versa for the source moving towards the detector
This shift in frequency is also known as doppler shift.
The shift in frequency when the source is moving away is known as redshift and the opposite one is known as blueshift.
It is densely populated because the majority of Egypt's population lives around the Nile River and in the north where the climate is somewhat less harsh and there is less desert terrain.
They will change shape from the air and rain and fog and other weather.
