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Airida [17]
3 years ago
14

In 1980, lava that flowed from the eruption of Mount Saint Helens in the state of Washington destroyed the vegetation that once

existed in the area. Today, the vegetation has reappeared as a result of-
Biology
1 answer:
Archy [21]3 years ago
5 0

Answer:  It to activate

Explanation:Mount St. Helens, Washington, is the most active volcano in the Cascade Range. Its most recent series of eruptions began in 1980 when a large landslide and powerful explosive eruption created a large crater, and ended 6 years later after more than a dozen extrusions of lava built a dome in the crater.

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The prevention of loss in the most top layer of soil from the erosion or maybe prevention of deducted fertility

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Describe the three key ingredients of life.
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Happiness, hydration, food

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I need help with my biology test. there are 6 questions.
mars1129 [50]

Answer:

1. False

2. True

3. True

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5 0
3 years ago
The nuclear equation shows the transmutation of a form of radon into polonium and an alpha particle. In one tho two sentences, e
padilas [110]

The equation is balanced because the mass and charge are equal on both sides of the reaction equation.

In a nuclear reaction, one nucleus is transformed into another. In this case of the equation shown, the radon nucleus is being transformed into a polonium nucleus with the emission of an alpha particle.

The equation is balanced because a total mass of 219 is found on both sides of the reaction equation and a total charge of 86. Recall that an alpha particle is the same as a helium nucleus with a mass of four units and a charge of two units.

Learn more: brainly.com/question/13440572

7 0
3 years ago
The specific heat of iron is 0.11 cal/goC. A cafeteria fork made of iron has a mass of 20 grams. How much heat energy is needed
Natasha2012 [34]
Hello!

To solve this problem you need to use the following equation for heat transfer to calculate the heat added (Q) and substitute in this equation the values for specific heat (c), mass (m) and temperature difference (ΔT). The following equation describes the heat needed to raise the temperature of a given object:

Q=c*m*ΔT=(0,11cal/g°C)*(11g)*(75°C-25°C)=121 cal:

So, to heat the cafeteria fork made of iron with a mass of 20 grams from 25 °C to 75°C, you'll need 121 cal of heat energy. 
3 0
3 years ago
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