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Galina-37 [17]
2 years ago
6

Two disadvantages to deforestation

Chemistry
2 answers:
mixas84 [53]2 years ago
8 0

Explanation:

<h3>Carbon Dioxide Emission : </h3>

During photosynthesis, trees and other plants remove carbon dioxide from the atmosphere, convert it into sugar molecules, and release oxygen. Carbon dioxide is a greenhouse gas that contributes to global warming. Forests remove carbon dioxide from the atmosphere and help mitigate the greenhouse effect. When trees are cut down, the carbon dioxide they previously absorbed and stored is released back into the atmosphere. According to the U.S. Environmental Protection Agency, 17 percent of the carbon dioxide released into the atmosphere is due to deforestation and the decay of trees and other biomass.

<h3>Soil Erosion :</h3>

The roots of plants anchor soil to the ground. When deforestation occurs, topsoil erosion increases because there are no roots to hold the soil in place, and no vegetation to break the force of falling rain. According to the World Wildlife Fund, half of the world’s topsoil has eroded away within the past 150 years. Erosion washes soil into nearby waterways, where the increased sedimentation and pollution damages marine habitats and affects local populations that fish or drink from the water source. Additionally, the erosion of topsoil decreases soil fertility and hurts the very agricultural efforts that are often the impetus for deforestation. In the Amazon rainforest, pasture and cropland dominate the clearcut sections of forest. Sedimentary runoff from deforested areas contaminates rivers, affecting everyone who uses that water.

<h3>Habitat Destruction : </h3>

Deforestation fractures forest habitat. Animals use trees for food, shelter, and nesting sites. Without trees, animals must find other places to survive or they will perish. Animal populations suffer dramatic losses when their natural habitat is altered. In tropical rainforests, where species diversity is highest, habitat fragmentation and loss can have significant effects on animal populations. For example, deforestation threatens the habitats of the howler monkey in the Amazon rainforest and the northern spotted owl in the Pacific Northwest region of the United States.

<h3>Loss of Biological Diversity :</h3>

Forests provide homes for numerous animal species, but they are also home to countless plant species. Scientists at the University of Michigan estimate that only one percent of the plant species in tropical rainforests have been screened for potential medicinal use. Of the small percentage of plants that have been studied, several have proven to have medicinal benefits. For example, medicine made from a species of wild periwinkle growing in Madagascar’s forests is now being used to treat patients with leukemia and other forms of cancer. Deforestation threatens future scientific discoveries of species that could be useful to mankind.

arsen [322]2 years ago
6 0

Answer:

Disadvantages of Deforestation

1. The Nature will be destroyed and there will be no trees where birds lay eggs and eat their fruits.

2. There will be pollution because trees are cut down and there will be no fresh air will be produced if they were cutted down.

Good luck

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alina1380 [7]

Answer:

  • <em>Number of protons, Z = 14</em>
  • <em>Number of neutrons, N = 14</em>

Explanation:

<u>1) About isotopes:</u>

<em>Isotopes</em> are different kind of atoms of the same element. Hence, they have the atomic number (Z), which is the number of <em>protons</em>, the same number of electrons (talking about to neutral atoms, not ions), and different <em>number of neutrons N).</em>

This is, it is the number of neutrons what distinguish different isotopes of an element.

<u>2) About the notation used to distinguish different isotopes:</u>

A superscript and a subscript, both to the left of the chemical symbol of the element, are used to <em>distinguish different isotopes</em>:

       A ←------------- This superscript tells the mass number of the isotope

           X ←--------- This is the chemical symbol of the element

      Z ←-------------- This subscript is the atomic number of isotope

In our case, the notiation for the isotope of silicon is:  ²⁸₁₄ Si

So, we have:

  • 28 is the mass number (A)
  • 14 is the atomic number (Z)
  • Si is the chemical symbol.

Now, you can answer the questions of the <em>part A</em>:

  • Number of protons: Z = 14
  • Number of neutrons N:

       mass number = number of protons + number of neutrons

                   A         =                 Z              +                N

⇒ N = A - Z = 28 - 14 = 14

In <u>conclusion</u>:

  • Number of protons, Z = 14
  • Number of neutrons, N = 14
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3 years ago
I am having trouble predicting this equation. "Coke will reduce hot arsenious oxide to pure arsenic (As4). With the 4 as the sub
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3 years ago
Starting with 6.3 g of salicylic acid, how many grams of acetylsalicylic acid (theoretical yield) can be made? Assume salicylic
tensa zangetsu [6.8K]

Answer:

We will produce 8.2 grams of acetylsalicylic acid

Explanation:

step 1: Data given

Mass of salicylic acid, = 6.3 grams

Molar mass salicylic acid = 138.12 g/mol

Molar mass of acetylsalicylic acid = 180.158 g/mol

Step 2: The balanced equation

C7H6O3 + C4H6O3 → C9H8O4 + C2H4O2

Step 3: Calculate moles salicylic acid

Moles salicylic acid = mass salicylic acid / molar mass salicylic acid

Moles salicylic acid = 6.3 grams / 138.12 g/mol

Moles salicylic acid = 0.0456 moles

Step 4: Calculate moles acetylsalicylic acid

Since the mole ratio is 1 to 1

For 0.0456 moles salicylic acid we'll have 0.0456 moles acetylsalicylic acid

Step 5: Calculate mass acetylsalicylic acid

MAss acetylsalicylic acid = moles acetylsalicylic acid * molar mass acetylsalicylic acid

MAss acetylsalicylic acid = 0.0456 moles * 180.158 g/mol

Mass acetylsalicylic acid = 8.2 grams

We will produce 8.2 grams of acetylsalicylic acid

4 0
3 years ago
How many moles of water can be produced with 4.3 moles of H2 and 5.6 moles of O2? Which reactant is limiting? How many moles of
xeze [42]

Answer:

Hydrogen H₂ will be the limiting reagent.

The excess reactant that will be left after the reaction is 3.45 moles.

4.3 moles of water can be produced.

Explanation:

The balanced reation is:

2 H₂ + O₂ → 2 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of each compound participate in the reaction:

  • H₂: 2 moles
  • O₂: 1 mole
  • H₂O: 2 moles

To determine the limiting reagent, you can use a simple rule of three as follows: if by stoichiometry 1 mole of O₂ reacts with 2 moles of H₂, how much moles of H₂ will be needed if 5.6 moles of O₂ react?

moles of H_{2} =\frac{5.6 moles of O_{2} *2 mole of H_{2} }{1 mole of O_{2}}

moles of H₂= 11.2 moles

But 11.2 moles of H₂ are not available, 4.3 moles are available. Since you have less moles than you need to react with 5.6 moles of O₂, <u><em>hydrogen H₂ will be the limiting reagent</em></u> and oxygen O₂ will be the excess reagent.

Then you can apply the following rules of three:

  • If by reaction stoichiometry 2 moles of H₂ react with 1 mole of O₂, 4.3 moles of H₂ will react with how many moles of O₂?

moles of O_{2} =\frac{1 mole of O_{2} *4.3 mole of H_{2} }{2 mole of O_{2}}

moles of O₂= 2.15 moles

The excess reactant that will be left after the reaction can be calculated as:

5.6 moles - 2.15 moles= 3.45 moles

<u><em>The excess reactant that will be left after the reaction is 3.45 moles.</em></u>

  • If by reaction stoichiometry 2 moles of H₂ produce 2 moles of H₂O, 4.3 moles of H₂ produce how many moles of H₂O?

moles of H_{2}O =\frac{2 moles of H_{2}O *4.3 mole of H_{2} }{2 mole of H_{2}}

moles of H₂O= 4.3 moles

<u><em>4.3 moles of water can be produced.</em></u>

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