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Darina [25.2K]
4 years ago
10

Why is topsoil crucial for agriculture

Biology
1 answer:
myrzilka [38]4 years ago
4 0
Topsoil is the most fertile soil layer for plants.
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Rain washing oily runoff from a road into a river that runs alongside the road is an example of point source pollution or nonpoi
gregori [183]

Answer:

This would be an example of nonpoint source pollution.

Explanation:

The source of point source pollution is typically factories and powerplants, leading to more air and water transferred pollutants and becoming easier to track. Nonpoint source pollution is the opposite of point-source pollution, with pollutants being released in a wide area. Since the rainwater would be washing the oils and particles into the water, it would be considered runoff. Runoff is one of the leading causes of point source pollution. I hope this helps. ^_^

7 0
3 years ago
Read the clues given below to classify an unknown organism. Clue 1: A simple multicellular organism with specialized organelles
Jlenok [28]

Answer:

the answer is bacteria Kingdom Protista Domain Bacteria

7 0
4 years ago
Read 2 more answers
Soil erosion is a huge problem affecting human sustainability because soil is so crucial in
alexdok [17]
<h3>Answer:  True</h3>

Healthy top soil is needed to grow crops, which in turn some of it becomes food. Erosion is the process in which top soil is carried away by the wind or rain water (depositing it into nearby lakes or streams). Without this top soil, farming becomes more difficult and crop yields likely decrease. In some cases, no crops can be grown at all. An extreme example of soil erosion, specifically wind-driven soil erosion, is the 1930s dust bowl during the Great Depression. This occurred due to over-farming and it led to massive dust storms. In turn, it caused many farmers to leave the area.

6 0
3 years ago
Natural gas drilling locations are determined by _______. a. random drilling b. seismic surveys c. natural gas dogs d. satellite
Jobisdone [24]

Natural gas is produced naturally by decomposed plants and animals which are subjected to intense heat from earth and pressure from rock. Seismic surveys are often used by geologists for its drilling.

<h3>What are the factors involved in natural gas drilling?</h3>

When extracting natural gas, it is very much important to identify correct location and to identify some factors regarding location. Below are the factors for consideration.

  • Extraction of resource: it is very important to select the exact site for the extraction. Various states have laws for this process.
  • Selection of drilling site: specific locations are selected based on factors like topography, reservoir characteristics, geology, etc. This is also done after clearing some laws.

Thus, the correct option is option b.

For more information about natural gas, visit:

brainly.com/question/12200462

7 0
2 years ago
Is Mycobacterium plei gram positive or gram negative or not either or?
Karo-lina-s [1.5K]

Answer:

The correct answer is they show weak positive gram staining reaction.

Explanation:

<em>Mycobacterium phlei </em>is a rod-shaped species of the genus Mycobacterium. They are acid-fast bacteria with mycolic acids rich cell wall due to which gram stain cannot penetrate easily and show light purple color while staining.

When gram staining is performed on the <em>M.phlei </em>, they take light purple color which indicates that it is a gram-positive bacteria and is related to Actinobacteria phylum of the gram-positive bacteria.

Thus, <em>M. phlei</em> is a gram-positive bacteria.

4 0
3 years ago
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