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Ivanshal [37]
3 years ago
11

Why are lichens called soil formers

Biology
1 answer:
Ipatiy [6.2K]3 years ago
6 0

Answer:

Lichens are not parasitic when they grow on trees, they just use the tree bark as a home. They enrich the soil by trapping water, dust and silt. When lichens die they contribute organic matter to the soil, improving the soil so that other plants can grow there.

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How does contour plowing in farming help to prevent pollution?
wel

D) Contour plowing is used to reduce erosion and sediment pollution.

Explanation:

Contour plowing in farming helps to prevent pollution by reducing surface erosion of topsoil and preventing sediment pollution.

Contour plowing is a farming technique in which crops are planted along the slopes of hills or contoured areas.

  • The rate at which rain water and precipitation moves along slope terrain is very fast.
  • This causes the washing off of the the topsoil on hills to eroded very fast.
  • Contour plowing breaks the slope and farming is done along movement on the contour.
  • This prevents topsoil erosion.
  • It also prevents sediment pollution in nearby streams and water bodies that are located around the valley at the base of the hill.

Learn more:

Soil erosion brainly.com/question/2473244

#learnwithBrainly

8 0
3 years ago
Please help, will be greatful!
Step2247 [10]

Answer:

B

Explanation:

3 0
3 years ago
True or false: tectonic plate boundary is where two or more tectonic plates meet
frosja888 [35]

Answer:

True.

Explanation:

4 0
3 years ago
Read 2 more answers
What layer of the atmosphere contains almost 80% of the atmospheres total mass
irina [24]

Solution:

The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere.

The troposphere is the lowest major atmospheric layer, extending from the Earth's surface up to the bottom of the stratosphere. The troposphere is where all of Earth's weather occurs. It contains approximately 80% of the total mass of the atmosphere.  

The troposphere is characterized by decreasing temperature with height (at an average rate of 3.5 degrees F per thousand feet, or 6.5 degrees C per kilometer). In contrast, the stratosphere has either constant or slowly increasing temperature with height.  

Thus the right answer is troposphere.

7 0
3 years ago
What are the sequence of events in the evolution of species
agasfer [191]
Founding population arrives, biogeographic isolation occurs, genetic changes
5 0
3 years ago
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