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aleksley [76]
3 years ago
11

What type of printer works by ejecting ink through tiny tubes?

Biology
1 answer:
omeli [17]3 years ago
4 0
Inkjet printer, I believe.
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Which words or phrases describe characteristics of quartzite? Check all that apply.
Strike441 [17]

Answer:

hey you!

Explanation:

Quartzite

Quartzite is a metamorphic rock formed when quartz-rich sandstone or chert has been exposed to high temperatures and pressures. Such conditions fuse the quartz grains together forming a dense, hard, equigranular rock. The name quartzite implies not only a high degree of induration (hardness), but also a high quartz content. Quartzite generally comprises greater than 90% percent quartz, and some examples, containing up to 99% quartz, and are the largest and purest concentrations of silica in the Earth's crust. Although a quartz-rich sandstone can look similar to quartzite, a fresh broken surface of quartzite will show breakage across quartz grains, whereas the sandstone will break around quartz grains. Quartzite also tends to have a sugary appearance and glassy lustre. The variety of colours displayed by quartzite are a consequence of minor amounts of impurities being incorporated with the quartz during metamorphism. Although quartzite can sometimes appear superficially similar to marble, a piece of quartzite will not be able to be scratched by a metal blade, and quartzite will not fizz on contact with dilute hydrochloric acid.

Texture - granular.  

Grain size - medium grained; can see interlocking quartz crystals with the naked eye.  

Hardness - hard.  

Colour - variable - pure quartzite is white but quartzite exists in a wide variety of colours.  

Mineralogy - quartz.  

Other features - generally gritty to touch.  

Uses - pure quartzite is a source of silica for metallurgical purposes, and for the manufacture of brick; as aggregate in the construction and roading industries; as armour rock for sea walls; dimension stone for building facings, paving etc.  

New Zealand occurrences - northwest Nelson (Aorere).

8 0
3 years ago
Read 2 more answers
What is the average hearing range of humans?
AfilCa [17]
<span>The range of human hearing is generally considered to be 20 Hz to 20 kHz, but it is far more sensitive to sounds between 1 kHz and 4 kHz. For example, listeners can detect sounds as low as 0 dB SPL at 3 kHz, but require 40 dB SPL at 100 hertz (an amplitude increase of 100).</span>
8 0
2 years ago
Read 2 more answers
Which statement explains how a DNA mutation causes sickle-cell anemia? (point)
gavmur [86]

Answer:

The DNA mutation causes a change in the amino acid sequence for hemoglobin, which causes a change in the shape of red blood cells.

Explanation:

Sickle cell anemia is one of a group of disorders known as sickle cell disease. Sickle cell anemia is an inherited red blood cell disorder in which there aren't enough healthy red blood cells to carry oxygen throughout your body.

Normally, the flexible, round red blood cells move easily through blood vessels. In sickle cell anemia, the red blood are shaped like sickles or crescent moons. These rigid, sticky cells can get stuck in small blood vessels, which can slow or block blood flow and oxygen to parts of the body.

Sickle cell anemia is caused by a mutation in the gene that tells your body to make the iron-rich compound that makes blood red and enables red blood cells to carry oxygen from your lungs throughout your body (hemoglobin). In sickle cell anemia, the abnormal hemoglobin causes red blood cells to become rigid, sticky and misshapen.

The sickle cell mutation reflects a single change in the amino acid building blocks of the oxygen-transport protein, hemoglobin. This protein, which is the component that gives red cells their color, has two subunits. The alpha subunit is normal in people with sickle cell disease. The beta subunit has the amino acid valine at position 6 instead of the glutamic acid that is normally present. The alteration is the basis of all the problems that occur in people with sickle cell disease.

7 0
3 years ago
Which of the following is the SI unit for length? a. gram c. meter b. liter d. kelvin
Kisachek [45]

Meter is the SI unit for length. :)
7 0
3 years ago
Read 2 more answers
Biodiversity of a species occurs when the last member of the species dies
kodGreya [7K]
I think the answer is Extinction
7 0
3 years ago
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