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Answer: A) Solar</h3>
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Explanation:
The sources of wind, hydro, and fossil fuels all use a turbine. So we can rule out choices B,C, and D.
A turbine is basically a wheel that spins to generate motion energy into electrical energy. Think of it like one of those stationary bicycles and the bike powers up a nearby lamp (the faster you pedal, the brighter the bulb gets). Another example that's similar to a turbine would be those flashlights where you can rotate a crank to have the light come on (which is useful for when the batteries are completely dead). The windmill blades act as a giant turbine that the wind spins around. Hydroelectric turbines are spun by the falling water. Fossil fuels are burned to create very hot steam which then powers a turbine. Even nuclear power uses turbines as well. With fossil fuels and nuclear energy, the idea is to heat up a vat of water and then turn that intensely hot steam into electrical energy through a turbine.
With solar panels however, the electrical energy is converted through a process of sunlight interacting with the solar cells that <u>doesn't require a turbine</u>. This explains why you can use solar panels to power up devices such as phones or laptops without having any moving parts. All you need is a flat set of solar panels.
There is a slight variation of solar power known as "concentrated solar power", aka "concentrated solar thermal", where solar panels are not used. Instead, a vast array of mirrors are set up to aim the suns rays at a very specific narrow area. Think of it like a magnifying glass to focus the suns rays. The place where the narrow beam hits has a very high temperature. This high temperature heats up water to turn to steam, and the process from here is effectively the same as fossil fuels or nuclear energy. So that means turbines are involved with concentrated solar power. I'm assuming your teacher is specifically referring to solar panels when they mentioned choice A.
The answer is meteorites just draw a rock going to the moon or a planet describe the meteor like a big rock and as evidence the craters of the moon were and still are created by meteorites.
Answer and explanation:
One negative effect that floods have on an ecosystem is that they destroy natural habitats and wildlife homes.
One positive effect that floods have on an ecosystem is that they can make fertile land a soil for plants a crops to grow.
One impact hurricanes have on an ecosystem is that they can bring unnative species from one place to another.
One impact tornados have on an ecosystem is that they can also destroy homes of native wildlife species.
Hope this helps!
Also, if this is not a multiple choice question, please give me a little bit of credit. Thank you!
Answer:
Basically, the ecosystem consists of all plants and animals, that interact with each other, and are living in a particular territory. Plants and animals represent the biotic (living) component of the ecosystem, while the soil, minerals, gasses, climate etc. represent abiotic (non- living) part.
Carbon is an essential element for all living beings and it is the main component of both organic and inorganic components.
Now, the question is how does that carbon enter the biotic part of ecosystem from the atmosphere (abiotic part).
In the atmosphere, carbon is mostly found in the form of carbon dioxide (CO₂). Plants are able to use it in this form, and with water and sunlight, through the process of photosynthesis, incorporate it in the organic components, such as sugar and complex carbohydrates. Animals that feed on plants can now ingest these compounds, making it part of their own organisms.
In this way, photosynthesis is the main process by which carbon from the atmosphere enter the biotic part of the ecosystem.
Answer:
c
Explanation:
An experiment in which an observer tests a hypothesis by looking for changes brought on by alterations to a variable. In a controlled experiment, an independent variable is the only factor that is allowed to be adjusted, with the dependent variable as the factor that the independent variable will affect.
in Basic terms The control group provides a baseline that lets us see if the treatment has an effect.
