The answer is D because the layers all the way at the bottom had to be there for other layers to be built on top
Explanation:
Wind energy is one of the sources of renewable sources of energy that is environmentally friendly.
It uses wind power to generate other forms of energy mostly electricity.
Some of the drawbacks are:
- Wind turbines pose serious threat to wildlife. It is common place to see dead birds in areas where wind power is being harnessed.
- The quantity fluctuates from time to time. Since wind is an element of weather, it is not always in regular supply as desired.
- The cost of constructing wind turbines can be very high a times.
Learn more:
Non-renewable sources of energy brainly.com/question/3386515
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Because during digestion, blood is needed to execute the process.
Swimming also requires blood so it takes the blood that was initially being used for digestion away.
Hope it helped!
Answer:
It is thin tissue that lines the alveoli
Hope this helps.
