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Natalka [10]
3 years ago
13

Brass gets discoloured in air because of the presence of which of the following gases in air?

Biology
1 answer:
leonid [27]3 years ago
4 0
B. Hydrogen sulphide
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fiasKO [112]
Number 9 is the second one. I think 10 is the first one.
4 0
4 years ago
Which of the following is the definition of macrophage
jolli1 [7]

Answer:

A type of white blood cell that ingests foreign material. Macrophages are key players in the immune response to foreign invaders of the body, such as infectious microorganisms. They are normally found in the liver, spleen, and connective tissues of the body.

Explanation:

4 0
3 years ago
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Which is the classification of any naturally occurring solid inorganic substance characterized by a crystal structure? A. fossil
dimulka [17.4K]

Answer:

C. mineral

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states. The three (3) classical states of matter are;

1. Liquid: is the state of matter in which the physical substance can be poured and takes the shape of its container. Also, liquids generally have a definite volume. Examples of liquids are urine, water, milk, blood etc.

2. Gas: is the state of matter in which the physical substance has no definite shape or volume and as a result fills all available space. Also, gases are easily compressible, takes the shape of its container and can flow. Examples of gases are hydrogen, oxygen, argon, nitrogen etc.

3. Solid: is the state of matter in which the physical substance has a definite shape and fixed volume but not compressible. Examples of solids are pen, screwdriver, television, car etc.

Mineral is the classification of any naturally occurring solid inorganic substance characterized by a crystal structure. Also, minerals are homogeneous in nature with a defined chemical composition and characterized by a crystal structure comprising of ions, atoms, or molecules in an orderly arrangement.

Some examples of minerals are iron, copper, aluminum, tin, coal, quartz, feldspar, mica, etc.

8 0
3 years ago
Reposting being i didnt get a G O O D answer....
Makovka662 [10]
I’m so sorry they did this one of mine tried to make this one too
4 0
3 years ago
Which movement of particles would be most affected by a disorder that causes damage to carrier proteins ?
Makovka662 [10]

Active transport;

The movement of particles would be most affected by a disorder that causes damage to carrier proteins is the active transport.

Explanation;

Active transport involves the movement of materials against the concentration gradient.

This type of transport requires energy in form of ATP to aid the movement of particles from a lower concentration to a higher concentration.

Active transport requires carrier proteins such as the sodium-Potassium pump, to move materials in and out of the cell.

7 0
4 years ago
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