Explanation

The report follows the International Energy Agency's (IEA) conclusion in its World Energy Outlook 2020 that solar power is now the cheapest electricity in history.

Explanation

the momentum of an object is equal to the mass of the object times the velocity of the object.

AGM 25-12-2022

Explanation

Convex lenses are used to treat presbyopia, hypermetropia, and aphakia

hypermetropia, and hyperopia, is a condition of the eye where distant objects are seen clearly but near objects appear blurred.

Explanation

Except at the magnetic pole, the Earth's magnetic field is always horizontal

 the horizontal component of the earth's magnetic field is zero at the magnetic poles.

Hence, Earth's magnetic field always has a horizontal component except at the magnetic poles where it is zero.

Explanation

Chlorophyll is a compound that is called a Chelate. 

Photosynthesis depends on the presence of chlorophyll for the absorption of light.

There are about five closely related chlorophylls:

1. chlorophyll a
2. chlorophyll b
3. chlorophyll c
4. chlorophyll d
5. chlorophyll e
6. chlorophyll f

Explanation

Oxidation is a chemical reaction involving the loss of electrons. 

Oxidation:

When a substance loses electrons during a chemical reaction, it is said to be oxidized. 

Reduction:

The opposite of oxidation is reduction, which is when a substance gains electrons. 

Explanation

Copper, gold, and silver are named coinage metals.

Because they have historically been used to mint coins.

Due to their malleability and resistance to corrosion.

Explanation

Steel is the most elastic material

Because it returns to its original shape more effectively after being deformed than the other materials listed.

Explanation

 non-metallic minerals are:

• limestone
• mica
• gypsum
• coal
• dolomite
• phosphate
• salt
•  granite.

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while

Ores of iron, aluminum, gold, and silver are examples of metallic minerals. Diamond, slat, potash, etc.

Explanation

Electrons are lost in an oxidation reaction.

Oxidation simply means a gain of oxygen and an oxidizing agent is a substance that oxidizes something.

The reduction is the gain of electrons