Need help ASAP! THANK YOU, DO QUESTION 10
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Answer:
I'll create more, but this is the limit (took a while, so brainlist plwease)
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Explanation:
Gasoline is a mixture of liquid organic materials. You already know about one of these materials—ethanol. Most gasoline in the United States is about 10% ethanol. The other materials in gasoline are mostly hydrocarbons: organic molecules made of only hydrogen and carbon. Because ethanol has oxygen atoms it is not a hydrocarbon.
One hydrocarbon molecule in gasoline is octane: C8H18. Here is the structure of an octane molecule. All of the different hydrocarbon molecules in gasoline have about the same amount of energy. However, octane is different from some of the other organic molecules in gasoline because octane burns very smoothly.
At a gas pump, people can choose from types of gasoline
with different octane ratings. All of the different grades have the same amount of energy, but high-octane gasoline burns more smoothly. The octane ratings on a gas pump indicate how smoothly the gasoline burns: an octane rating of 100 means that the gasoline burns as smoothly as pure octane.
(High-grade gasoline is more expensive. Most cars do not need gasoline that burns so smoothly, so for most cars it makes sense to get the less expensive lower-octane gasoline that has just as much energy.)
How does an engine get energy
<h3><u>Answer;</u></h3>
B.introduced species
<h3><u>Explanation;</u></h3>- <em><u>Animals become extinct for a number of reasons. Currently many animals are endangered or have become extinct due to human activities or human influence.</u></em>
- Extinctions may be caused by reasons;<em><u> such as pollution; loss of habitat due to human activities such as agriculture, introduced species, hunting and poaching for meat and other animal products such as feathers, horns and skins, and also over-harvesting among other influences.</u></em>
- In this question; <em><u>Introduced species occupies the largest percentage, that is 39%, from the pie chart (Attached).</u></em>
- Hunting and poaching; 23 %, Habitat loss; 26%, and Others; 2%.