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.
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Answer:
6.0 to 7.0
Explanation:
A pH of 6.5 is just about right for most home gardens, since most plants thrive in the 6.0 to 7.0 (slightly acidic to neutral) range. Some plants (blueberries, azaleas) prefer more acidic soil, while a few (ferns, asparagus) do best in soil that is neutral to slightly alkaline.
Answer:
A beaker is used for holding 100mL of water
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Answer:
Atmospheric Pressure and Winds belts.
Explanation:
- As the fluid is heated it rises as the molecules get energy on heating, similarly the particles cool when they are condensers at a certain temperature that causes them to sink a similar pattern is found in the atmosphere also. The light arises and heavier air falls as it's dense and hence sinks again.
- Similarly, the earth heating patterns that are derived from convection currents coming from the mantel are also derived from the tectonic processes from within the earth's interior.
- Within the atmosphere and oceans are also found the wind and pressure belts that rotate in the spherical motion and derive up and down from the equator of the earth. The poleward cool air and hot air from the equator are mixed and create turbulence in the upper atmosphere in the form of Jet steams and westerlies and easterlies that derive the weather patterns around the globe.
Explanation:
There are four main types of deltas classified by the processes that control the build-up of silt: wave-dominated, tide-dominated, Gilbert deltas, and estuarine deltas.
