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4 years ago

Where does most pollution come from?

Chemistry

2 answers:

SOVA2 [1]4 years ago

7 0

Answer: Most ocean pollution begins on land

When large tracts of land are plowed, the exposed soil can erode during rainstorms. Much of this runoff flows to the sea, carrying with it agricultural fertilizers and pesticides. Eighty percent of pollution to the marine environment comes from the land.

Explanation:

Hope this helped. Goodluck! xD

Jet001 [13]4 years ago

6 0

Pollution comes in many forms for example
Air pollution and water pollution.

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Scientists believe that the modern horse developed from a short, horse-like mammal about the size of a dog. Over millions of yea

Fittoniya [83]

Answer:

Explanation:

Horses with longer legs could out run predators and survive. Not getting eaten or injured helps with staying alive long enough to reproduce.

8 0

3 years ago

when an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. what is the so

Virty [35]

The source of heat energy would be the electrical energy
By this i mean that the electric kettle converts the electrical energy from the outlet into heat energy

6 0

3 years ago

(I’m timed please help) What occurs during a solar eclipse? Check all that apply

Ymorist [56]

Answer:

the moon is between the earth and the sun

Explanation:

☀️ = solar eclipse

5 0

4 years ago

Read 2 more answers

which nonmetals could form an ionic compound with the formula MgX^2 ( where X represents the nonmetal)? (possible, not possible)

djverab [1.8K]

Answer:

The answer to your question is:

Explanation:

Ionic compound is formed when a metal and a nonmetal are attached.

If we have MgX₂, that means that the nonmetal must have a valence of -1.

From the list the nonmetals with a valence of -1 are:

Bromine(Br) and fluorine(F).

7 0

4 years ago

A 100 gram block is placed on a scale that is known to have a 12% error. What will the scale read?

sesenic [268]

The scale will read <u>112 grams.</u>

Why?

Since we already know the percent error of the scale (12%) and we also know the mass of the block that is placed on the scale, we can calculate what will be the read of the scale by using the following formula:

$ScaleRead=100g+(100g*\frac{12}{100})=100g+(100g*0.12)=100g+12g\\\\ScaleRead=112g$

We can see that the scale will read 112 grams.

Let's verify that we are right by using the following formula to verify if the obtained value for the scale read will be 12%:

$PercentError=\frac{ActualValue-RealValue}{RealValue}*100=\frac{112g-100g}{100g}*100\\\\PercentError=\frac{12g}{100g}*100=0.12*100=12(percent)$

Hence, we can see that the scale will read <u>112 grams.</u>

Have a nice day!

7 0

4 years ago