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Arada [10]
3 years ago
15

What purpose would the sand serve?

Biology
1 answer:
mihalych1998 [28]3 years ago
5 0

Sand is a granular material composed of finely divided rockand mineral particles. It is defined by size, being finer than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.[1]

The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastalsettings is silica (silicon dioxide, or SiO2), usually in the form of quartz. The second most common type of sand is calcium carbonate, for example, aragonite, which has mostly been created, over the past half billion years, by various forms of life, like coral and shellfish. For example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years like the Caribbean.

Sand is a non-renewable resource over human timescales, and sand suitable for making concrete is in high demand.[2] Desert sand, although plentiful, is not suitable for concrete, and 50 billion tons of beach sand and fossil sand is needed each year for construction.

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Which characteristic of viruses prevents them from being used as evidence to support cell theory?
Ne4ueva [31]

Answer:

Viruses replicate only inside host cells.

Explanation:

<u>Viruses are not used as evidence to support the cell theory because they are not considered a cell and cannot carry out vital life processes without getting into host cells. </u>

According to the cell theory, the cell is the basic unit of life, all living organisms are made up of cells and cells arose from preexisting cells. A virus that is not in a host cell is just a piece of DNA/RNA surrounded by a protein coat and is not capable of carrying out any life process for it to be considered living.

<em>Viruses are only able to reproduce and multiply when they get access to a living host. They use the genetic mechanisms of the host to replicate their DNA/RNA using the lytic or lysogenic cycle. Hence, they are not used to support the cell theory. </em>

3 0
3 years ago
Which of the following is not a possible consequence of surface mining?
aleksklad [387]

Answer;

B. improved ecosystem health

Explanation;

-Surface mining is a method of extracting minerals near the surface of the Earth. The three most common types of surface mining are open-pit mining, strip mining, and quarrying.

-The environmental impact of mining includes erosion, formation of sinkholes, loss of biodiversity, and contamination of soil, groundwater, and surface water by chemicals from mining processes.The environmental effects of surface mining include;

  • Habitat destruction
  • Soil erosion
  • Air pollution from dust particulates
  • Pollution (especially from sediments)
  • All surface mining techniques negatively affect the environment, though some methods are more damaging than others.
7 0
3 years ago
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What is a cephalopod?
klio [65]

A cephalopod is a predatory-like mollusk of the large molluscan class of Cephalopodan animals. This includes cuttlefish, octopus, squid, and/or nautilus. They are animals that live in the ocean. Additionally they eat foods like fish and jellyfish on regular and customary occasions. They sometimes possess cannibalism by eating their own species, which is absolutely crazy. Anyways, I hope that this has helped you today.. :)

4 0
3 years ago
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Do all the days of the year have the same amount of daylight? yes or no how?
Ket [755]

Answer:

No

Explanation:

Atmospheric refraction raises the sun about 1/2 degrees upward in our sky at both sunrise and sunset. This advances the time of actual sunrise, while delaying the time of actual sunset. This gives several minutes of extra daylight, not just at an equinox.

4 0
2 years ago
What occurs when two pieces of land change their vertical relationship to each other?
Natali5045456 [20]

The answer to this is A.

The reason its A is because a Dip-Slip is inclined fractures where the blocks have mostly shifted vertically. If the rock mass above an inclined fault moves down, the fault is termed normal, whereas if the rock above the fault moves up, the fault is termed reverse.

6 0
3 years ago
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