Spyman stated that Eurasia's rimland, the coastal areas, is the key to controlling the World Island. ... Whoever would control the rimland, would eventually control the World Island. Whoever would control the World Island would soon control the world. Example - His theory was influential mainly during the Cold War.
Answer:
C. emigration
Explanation:
Definition of emigration is when more people leave a country or certain area more than people moving in, because of certain push factors, such as war, famine, disease, etc. (Factors that make people want to leave your area.)
Immigration is when people migrate to your country/area
Increased food supply means there is more people to feed, meaning more people will want to move to your country/area.
Diffusion is when people spread out in your country, taking up more space, leaving less living room for more people in the population.
Answer:
animal wastes and fertilizers
Explanation:
The majority of the nitrates that are polluting the rivers come from the animal wastes and from the fertilizers used in the agriculture. The increased amounts of nitrates in the rivers causes eutrophication. This basically means that the water is becoming over-saturated with nutrients. This leads to the spreading out of the algae. As the algae spread out more and more, they cover the surface part of the water, so large portions of the rivers do not receive sunlight, which kills of the organisms that use photosynthesis. Further, the algae reduce the amount of oxygen in the water, often resulting in dying out of the fishes. It is a chain reaction that leads from one thing to another and the end result is devastating.
Answer:
physically, our fingerprints make us all unqiue. We also all think different and no two of us look exactly the same
Answer:
b. wind waves, seiches, tsunami, tides.
Explanation:
The wavelength of water waves is calculated measuring the distances between the trough (low point) portion of a wave. Usually, the bigger the wave, the greater the wavelength.
wind waves: small waves caused by the wind. These waves tend to be small and with a short wavelength.
seiches: are usually waves on a lake or other closed water bassin. They can be pretty high from a human perspective, so they are definitely bigger than wind waves.
tsunami: we all know how big the waves of a tsunami can be, totally wiping out coastal cities they encounter, so that's pretty big waves, and big waves tend to be larger apart (so with a bigger wavelength) than smaller ones.
tides: yes, a tide can be considered as a huge wave... that's running throughout the planet. We barely see it as a wave because we can only see one wave at a time, the next wave being tens of thousands of mile away.
