Answer:
Rain and wind will cause granite to break down and form soil over time.
Explanation:
Granite is an igneous rock, and it is one of the hardest rocks for that matter. Being an igneous and very hard rock, granite is not easy to break down and it takes a very long time, tens of millions of years in fact, and that is only if it is on the surface and exposed to the outside elements. Basically, this rock needs a very long period of time to get transformed into soil, but like any other rock it is not unbreakable and eventually, it starts to break up.
Two things that will have a big influence on the breaking up of granite would be rain and wind. The rain will cause chemical weathering while the wind will cause mechanical weathering. They will manage to gradually break up very small, fine, pieces of granite, and if they are supported by suitable climatic conditions and a lot of vegetation the process will speed up. Once the granite is broken apart and what is left of it is fine sediments, by mixing with the biomass it will form a soil.
I believe the answer is earthquakes.
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.
