Answer:
4900 J
Explanation:
Potential energy is the product of the mass, gravitational constant and the height of the object.
U=mgh=10 kg×9.8 m s^(-2)×50 m=4900 J
So, the potential energy of the object is 4900 J.
Answer:
If the forest on the hill is cleared, than the soil will lose its natural cover and protection from erosion. The soil will become much more exposed to the erosion, and its top layers will be moved away relatively easy and quickly. Those layers will move downwards, and practically will end up into the river that passes beside the hill. With a significant increase of sediments getting into the river, the river will start to deposit much more material. Also, the sediments will make a problem when there's heavy rainfall because the river will be able to get out of its river bad more easily and cause a flood. The water of the river will also became murkier, muddier, which will make it dark yellowish/light brownish in appearance when there will be rainfall.
Explanation:
hope this helps!
Answer: <em>They are both necessary for organisms to survive.</em>
Explanation:
<em>Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.</em>
The best and most correct answer among the choices provided by your question is the first choice or letter A. Margarines are products <span> made up of fatty acids that are derived from alkenes.
</span>The main ingredients in most margarines are vegetable oils like soybean or safflower oil.Vegetable oils<span> are mostly unsaturated, which is a problem because unsaturated oils are liquid at room temperature and cannot be used as spreads.
</span>
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Answer:
<u>Why do geologists use the geologic time scale?</u>
Because of the time span of Earth's past is so great, geologist use geologic time scale to show Earth's history.
<u>What is the geologic time scale?</u>
The geologic time scale is a record of the geologic events and the evolution of life forms as shown in the fossil record.
<u>How do scientists develop the geologic time scale?</u>
Scientists first developed the geologic time scale by studying rock layers and index fossils worldwide. With this information,scientists placed Earth's rocks in order by relative age. Later, radioactive dating helped determine the absolute age of the divisions in the geologic time scale.
<u>What do the divisions of geologic time scale depend on?</u>
The divisions of the geologic time scale depend on events in the history of life on Earth.
Hope these help, :)
