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In Palaeozoic Era life evolved was in its simplest form and gradually the complexities increased with the progress in time. Life of microscopic level were identified in the precambrian era which were simple. Mesozoic comes after palaeozoic with advancement in the life form which has most complex...Read More
A water table is the upper level of an underground surface in which the soil or rocks are permanently saturated with water. The water table separates the groundwater zone that lies below it. It varies both with the seasons and from year to year because it affected by climate changes and by the...Read More
The hydrologic cycle begins with the evaporation of water from the surface of the ocean. As moist air is lifted, it cools and water vapor condenses to form clouds. Moisture is transported around the globe until it returns to the surface as precipitation.
The sequence of conditions throug...Read More
It might be tempting to assume that mass can be determined by sinking a rock into a measuring cylinder of liquid, but only the volume can actually be determined that way. Simply, the volume displaced by the object pushes the level of liquid up so that the before and after measurement will give...Read More
Geology and ecology are two branches of science that have many similarities, but there are many differences too. If you have ever gone outside and picked up a rock and studied it, you are doing something about geology. Both have to do with the environment and everything that is on the planet....Read More
It can be confusing to know the difference between era and period, but the more that you know about it, the more that you will understand why they are used differently. A period refers to a large interval that has existed in a time that has already ended. The period has usually made significant...Read More
Letter C is the right answer among the choices. Intrusive igneous rocks are made from magma that are in the Earth’s crust. These rocks are cross-grained due to they have a slow cooldown time. One can easily identify the rocks as they are coarse and have large particles.
Extrusive ig...Read More
People may find a mineral and need to be able to identify it. In history, before the minerals were discovered, they would have to be identified through a system of tests. Today, we use the same tests. First, the scientist would look at the color of it. This is probably the easiest thing to see...Read More