Which elements are found in high proportion in earth's crust?

Answers

Answer 1

Answer: here's a few: magnesium, oxygen, silicon, phosphate, and aluminum are all found in earth's crust in high proportion. oxygen being the highest proportion of any other element.

Related Questions

Define universal solvent.
Which of the following statements does NOT describe a function of wetlands? Select one:Wetlands buffer shorelines against erosion.Wetlands make good hazardous waste dumpsites.Wetlands filter pollutants.Wetlands provide spawning grounds for commercially important fish and shellfish
Which of the following is correctly paired with its function?Sensory somatic nervous system—controls skeletal musclesAutonomic nervous system—creates voluntary response to stimuliParasympathetic nervous system—controls body response to emergencySympathetic nervous system—brings body to homeostasisI know that C and D are mixed up definitions. The sympathetic nervous system controls the response to emergency situations and the parasympathetic brings the body back to homeostasis. I'm also pretty sure the autonomic nervous system controls involuntary responses, not voluntary.
The scientific method could not be used to study which of the following phenomena? the effect of daily exercise on gerbils the authenticity of UFO sightings whether Vitamin C consumption reduces cold symptoms the effects of second-hand smoke on household pets
4. Which of the following is a function of the cytoskeleton?A. Helps a cell keep its shapeB. Contain DNAC. Surround the cellD. Helps make proteins 5. Which of the following is a function of a vacuole?A. Packaging of materials B. Transport of materials C. Storage of materials D. Breakdown of materials

Which of the following best describes the hydrolysis of carbohydrates? a.The removal of a water molecule breaks bonds between sugar mono-mers. b.The removal of a water molecule forms a bond between sugar mono-mers. c.The addition of a water molecule breaks a bond between sugar mono-mers. d.The addition of a water molecule forms a bond between sugar mono-mers.

Answers

Answer:

c.The addition of a water molecule breaks a bond between sugar mono-mers.

Explanation:

Hydrolysis refers to reaction with water. When water molecules are added to carbohydrates, the bonds between the sugar monomers are broken. This is the chemical reaction known as hydrolysis reaction.

Generally, since carbohydrates are polymers we can say that hydrolysis reactions result in the breakdown of carbohydrate polymers into sugar monomers by using water molecules

The statement which best describes the hydrolysis of carbohydrates is: c. The addition of a water molecule breaks a bond between sugar mono-mers.

Biological macromolecules can be defined as a very large molecule (structure) that comprises covalently bonded organic atoms and smaller molecular structures (monomers).

Biological macromolecules are grouped into four (4) main categories and these includes;

Nucleic acid.

Proteins.

Lipids.

Carbohydrates.

Carbohydrates are contained in energy-giving foods and they aid in the proper functioning of muscles, nervous system and other organs found in the body of a living organism such animals and human beings.

Hydrolysis can be defined as a double chemical decomposition of a compound that involves the addition of both the hydroxide anion and hydrogen cation of water and the splitting of one or more chemical bonds.

Hence, hydrolysis of carbohydrates is the addition of a water molecule in order to break a chemical bond between sugar monomers.

Unlike cones, rods ?

Answers

An eye contains receptors called photoreceptors viz rod and cone cells. Cones are cone-shaped structures and are necessary for daylight vision. Unlike cones, rods are rod-like structures and are necessary for dim-light vision. Rods are far more numerous than cone cells.

Humans affect the carbon cycle in many ways through the use of fossil fuels, clear cutting of forests, and controlled burns. Which of the following processes can help counteract these human interactions

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Assuming that this is referring to the same list of options that was posted before with this question, the best option from the list is that laws can be made to slow the process.

What part of the body has lots and lots of human cells, where we can easily access these cells and extract DNA?

Answers

Answer:

i think it is bone marrow or the brain because every cell has dna

What enables Dna to have so many variations with only 4 chemicals?

Answers

Answer:

Different combinations between these four set of chemicals

Explanation:

There can be billions of combinations between the four chemicals of DNA. The four set of chemicals i.e nucleotide (generally referred to as bases) namely -

A- Adenine

T- Thymine

C - Cytosine

G - Guanine

These nucleotide form codon i.e set of three nucleotide and form chain structure which can be long up to any extent.

Codon example - ATC TGA

Thus, variation in combination of four nucleotide and ability to form long chain of codon allows DNA to have several forms and variations

Even though DNA only has 4 nitrogenous bases there can be variety of combinations for DNA. One difference in combination would mean a different DNA strand.

How have humans contributed to the increase in earthquake activity?

Answers

Humans had contributed to the increase in earthquake activity by building dams and reservoirs, extracting water from underground, and building geothermal power plants.

Yes. We drill into the earth to mine for gas, oil and minerals and construct massive dams and, as a result, have caused at least 200 quakes of more than 4.5 magnitude in the past 160 years, says Christian Klose, a researcher at Columbia University who studies man-made quakes.The best-known case is the earthquake caused by the Zipingpu Dam, in China's Sichuan province, in 2008. Zipingpu held 42.3 billion cubic feet of water, the weight of which precipitated what Klose says is the largest human-triggered earthquake to date: a 7.9-magnitude quake that killed nearly 80,000 people. Klose estimates that Zipingpu, with nearly 320 million tons of water pressing down on a fault line, contributed enough stress to trigger the quake through a process called impoundment. "If you push your finger on top of a paper plate, the plate will bend," he says. "That same effect works on all the tectonic plates on the Earth's crust." The quake occurred two years after the dam's completion, and its epicenter was a mere three miles from the structure.Authorities in Basel, Switzerland, shut down the city's geothermal plant after a 3.4 quake in 2006. Tapping geothermal energy involves boring into rock miles beneath the Earth's crust in search of steam as a source of energy. Engineers in areas without much water, such as Basel, sometimes create boreholes by way of hydraulic fracturing, or "fracking," which involves forcefully injecting water to create fissures. Fracking can generate small tremors, but the real damage may happen as excess liquid pools in the cracks between rocks, making them less stable. Although dams have caused some 76 earthquakes, mining is responsible for at least 137 earthquakes, over half the number of man-made quakes to date.In 1989 a 5.6-magnitude earthquake hit Newcastle, Australia, the direct result of coal mining. Extracting millions of tons of coal added stress to the fault lines, but the real danger resulted from the water that was extracted during mining. For each ton of coal produced, Klose estimates, 4.3 times as much water was pumped out of the ground, a necessary step to prevent flooding inside the mine. But removing so much water dramatically altered the stability of the earth surrounding the mine. Klose says the earthquake caused $3.5 billion in damage—an amount that nearly equaled the profit of all the coal produced by the mine over its 200-year history.

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