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Alex_Xolod [135]
3 years ago
12

Human activities have resulted in changes to the atmosphere. true or false

Biology
2 answers:
mojhsa [17]3 years ago
5 0
That had to be True... Because Human activities contribute to climate change by causing changes in Earth's atmosphere in the amounts of greenhouse gases, aerosols small particles, and cloudiness.
soldier1979 [14.2K]3 years ago
4 0
True aka pollution from machines smoke carbon emissions etc
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Characteristic of marble rock
andriy [413]
The characteristics of a marble rock is

Color: Marble is usually a light-colored rock. When it is formed from a limestone with very few impurities, it will be white in color. Marble that contains impurities such as clay minerals, iron oxides, or bituminous material can be bluish, gray, pink, yellow, or black in color.

Marble of extremely high purity with a bright white color is very useful. It is often mined, crushed to a powder, and then processed to remove as many impurities as possible. The resulting product is called "whiting." This powder is used as a coloring agent and filler in paint, whitewash, putty, plastic, grout, cosmetics, paper, and other manufactured products.

Acid Reaction: Being composed of calcium carbonate, marble will react in contact with many acids, neutralizing the acid. It is one of the most effective acid neutralization materials. Marble is often crushed and used for acid neutralization in streams, lakes, and soils.

It is used for acid neutralization in the chemical industry as well. Pharmaceutical antacid medicines such as "Tums" contain calcium carbonate, which is sometimes made from powdered marble. These medicines are helpful to people who suffer from acid reflux or acid indigestion. Powdered marble is used as an inert filler in other pills.

Hardness: Being composed of calcite, marble has a hardness of three on the Mohs hardness scale. As a result, marble is easy to carve, and that makes it useful for producing sculptures and ornamental objects. The translucence of marble makes it especially attractive for many types of sculptures.

The low hardness and solubility of marble allows it to be used as a calcium additive in animal feeds. Calcium additives are especially important for dairy cows and egg-producing chickens. It is also used as a low-hardness abrasive for scrubbing bathroom and kitchen fixtures.

Ability to Accept a Polish: After being sanded with progressively finer abrasives, marble can be polished to a high luster. This allows attractive pieces of marble to be cut, polished, and used as floor tiles, architectural panels, facing stone, window sills, stair treads, columns, and many other pieces of decorative stone.
3 0
4 years ago
A kinase is an enzyme that phosphorylates target proteins, whereas a phosphatase is an enzyme that dephosphosphorylates target p
Dennis_Churaev [7]

Phosphatase removes the phosphate groups from protein molecules during the dephosphorylation process. As a result, a phosphatase can deactivate a protein that has been activated by a kinase. Dephosphorylation, however, cannot be reversed. 

<h2>What is Phosphorylation?</h2>

It is a process in which a molecule gets attached to a phosphoryl group.

The opposite of the phosphorylation is dephosphorylation in which the molecule looses a phosphoryl group.

Learn more about phosphorylation with the help of given link:

https://brainly.in/question/7983385

#SPJ4

8 0
2 years ago
Select the correct answer.
avanturin [10]
Lungs, pleurisy is a disease that affects the wall in between the lungs, that worsens with breathing
5 0
2 years ago
How do you think invasive species affect the limiting factors in a habitat
mote1985 [20]

Answer:

invasive species threaten biodiversity

Explanation:

they can take up an inoordinate amount of resources that affect people and animals. they are different from reintroducing a species. invasive species are bad for biodiveristy.

4 0
3 years ago
Which of the following nucleotide triplets best represents a codon?A) a triplet separated spatially from other tripletsB) a trip
lesya [120]

The right answer is D.

A codon is a sequence of three nucleotides on a messenger ribonucleic acid (mRNA) specifying one of the 22 proteinigenic amino acids whose succession on the messenger RNA determines the primary structure of the protein to be synthesized. As the messenger RNAs consist of a succession of several tens to several hundreds of nucleotides, it is also several tens to several hundreds of amino acids that can thus be assembled linearly to form protein chains.

3 0
3 years ago
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