Explanation

• Phosphorus (P), Potassium (K), and Nitrogen (N) are three essential macronutrients for plant growth.
• It is also referred to as "NPK".
• They play critical roles in various plant processes, including photosynthesis, root development, and cell growth.

Explanation

Chile saltpeter is the common name for sodium nitrate (NaNO₃).

It is found naturally in Chile and Peru.

It is used in fertilizers and explosives.

Explanation

The proverb is: "As the crow is, so the eggs shall be," meaning offspring resemble their parents.

It emphasizes the idea that traits or qualities are passed down.

Explanation

Explanation

This is a well-known proverb: "Necessity is the mother of invention."

It means that needs and problems inspire creative solutions.

Necessity ضرورت

Invention ایجاد

Explanation

Metals make up the majority of elements in the periodic table, especially on the left and center.

They are generally good conductors, malleable, ductile, and have high melting points.

Explanation

The correct preposition with "paid" when referring to something purchased is "for".

The sentence should be: "I have paid for it."

Explanation

• 1 second → Half oscillation of a seconds pendulum
• 0.1 second → Very fast oscillating system
• 2 seconds → Time period of a seconds pendulum
• 0.5 second → Faster pendulum, shorter length than seconds pendulum

Explanation

Appreciable means نوٹ کرنے یا ناپنے کے لیے بڑے یا کافی اہم

Measurable means نوٹ کرنے یا ناپنے کے لیے بڑے یا کافی اہم

Explanation

The troposphere is the lowest layer of the atmosphere, directly in contact with the Earth's surface.

It is where weather occurs and contains about 75% of the atmosphere’s mass.

The principle constituent of the atmosphere of the Earth is called Nitrogen.