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harina [27]
2 years ago
11

Why might humans purposefully cause disturbances in an ecosystem? Explain

Biology
1 answer:
irina1246 [14]2 years ago
8 0

Alot of humans might not now they are even harming the systems by smoking or littering.

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Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of
ELEN [110]

Answer:

Total 495 liters of natural oil are needed.

Explanation:

It is given that Petrolyn motor oil is a combination of natural oil and synthetic oil. It contains 5 liters of natural oil for every 3 liters of synthetic oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{5}{5+3}=\frac{5}{8}

Let in order to make 792 liters of Petrolyn oil he needs x liters of natural oil.

It means the ratio of natural oil and synthetic oil is

\frac{\text{Natural oil}}{\text{Petrolyn motor oil}}=\frac{x}{792}

Equate both ratios,

\frac{x}{792}=\frac{5}{8}

On cross multiplication we get

8\times x=5\times 792

8x=3960

Divide both sides by 8.

x=\frac{3960}{8}

x=495

Therefore total 495 liters of natural oil are needed.

6 0
3 years ago
Which is considered a scientific observation?
jasenka [17]

Answer:

Mahir noticed the plant he watered grew taller than those with less water

Explanation:in the process of the scientific method,an observation about an occurrence happens first before an hypothesis is formulated and tested .

Observation usually involves the the description of a phenomenon.

6 0
3 years ago
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A scientist isolates a gene from a human cell that codes for a specific protein. The gene is inserted into a bacterial plasmid i
Elden [556K]
The correct answer for the question that is being presented above is this one: "Synthesized." A scientist isolates a gene from a human cell that codes for a specific protein. The gene is inserted into a bacterial plasmid in order to mass produce the protein for medical purposes. The next step in mass production of the protein would be synthesized of the bacterium containing the modified plasmid.<span>
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3 years ago
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If You Had The World’s Attention For 30 Seconds, What Would You Say?
bazaltina [42]

Answer:Were all worthless in this world!!!!!

Explanation:This should be obvious, we only live and then die.

7 0
2 years ago
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What substance must plants produce in order to make lipids?
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Amino acids are produces
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3 years ago
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