Answer:
Because the living things need to survive somehow.
Explanation:
Malthus theory of population mention that this will increase in a geometric way, meanwhile the food to feed population will increase in an arithmetic way, so in one point, people will fight for food to survive.
Later, Darwin took this concept of struggling for surviving, how a couple of living things normally have double or triple of offspring, that means that by passing the time, there are more living things that the food that they can reach. He thought also, how a living thing can survive to the different conditions of the environment like heat, food, preys, etc. Later Wallace had the same conclusion about the natural selection but using different methods.
Hope this info is useful.
By the population and the water losses over time the people and cities have effected this in some harmful way.
Answer: Nitrogen fixation in soil is important for agriculture because even though dry atmospheric air is 78% nitrogen, it is not the nitrogen that plants can consume right away. Its saturation in a digestible form is a necessary condition for crop health. ... It is possible thanks to nitrogen-fixing organisms and crops.
Explanation:
Answer:
Adminstrative divisons based on geographical separations
Explanation:
After its conquest, Spanish America split its entire territoryalong geographical divisions such as the Andes Mountains to better manage its territories. This, like in other colonized regions, created cultural divisons in peoples that were once unified.
Answer:
A
Explanation:
The closeness of a city to either land or water will affect the temperature of the city. If a city is closer to water, its temperature will be lower. However, if the city is farther from water, its temperature will be higher. This in contrast to the closeness of a city to land. Therefore, it can be concluded that the city with the greatest temperature is city A.
