Yes this is true, all of that would be considered earth science.
<span>To draw cause and effect conclusions, one needs to conduct a formal experiment, sometimes called a control experiment. The independent variable in this type of experiment is the only thing that is allowed to changed so the experimenter is able to conclude that the it is the independent variable which affected the dependent variable. In other words the independent variable effects the dependent variable, and it is the only thing that can effect the dependent variable.
This is not true in correlational experiments. Remember the oft repeated phrase that correlation does not mean causation. In other words, a lot of people carry umbrellas on a rainy day (there is a correlation between rainy days and people carrying umbrellas) but the umbrella carrying people did not cause the rain.</span>
The nile river the gift of Egypt would be described as:-
Every year between June and September there would be a rainy season called Akhet- the inundation and would usually flood the river and Melting snow and heavy summer rain from the Ethiopian Mountains would come tormenting down to the river on the flat desert land. (Hope this helps).
