Explanation

Explanation

• Carbon dioxide (CO2) is a major greenhouse gas.
• It responsible for about 65% of the Earth's greenhouse effect.

Explanation

اسم معرفہ: یہ وہ اسم ہوتا ہے جو کسی مخصوص شخص، جگہ یا چیز کو ظاہر کرتا ہے۔

اس کی چار اقسام ہیں:

اسم علم: جو کسی خاص شخص یا جگہ کے نام کے طور پر استعمال ہوتا ہے (مثلاً: پاکستان، احمد)۔

اسم ضمیر: جو کسی شخص یا چیز کی جگہ ضمیر کے طور پر استعمال ہوتا ہے (مثلاً: وہ، یہ)۔

اسم اشارہ: جو کسی مخصوص چیز یا شخص کی طرف اشارہ کرتا ہے (مثلاً: یہ، وہ)۔

اسم موصول: جو کسی جملے کے ساتھ مل کر مکمل معنی فراہم کرتا ہے (مثلاً: جو، جس)۔

Explanation

Explanation

Entomology is the study of insects and their relationship to humans, the environment, and other organisms.

while

Zoology is the study of all animals.

Biology is a natural science concerned with the study of life and living organisms.

Etymology investigates and documents the lives.

Explanation

Article 25-A of the Constitution of Pakistan obligates the state to provide free and compulsory education to children aged 5 to 16 years.

This article ensures that every child has access to education as a fundamental right.

Explanation

• Chemical digestion of proteins begins in the stomach
• Mechanical digestion (chewing) starts in the mouth,
• The chemical breakdown requires gastric juices, specifically hydrochloric acid (HCL)
• The enzyme pepsin activates and breaks down protein molecules.

Last updated by NS on 20-April-2026

Explanation

• A plane mirror produces a virtual image, meaning it's not a real image that can be projected onto a screen.
• The image is also upright, meaning it's not inverted or flipped.

Explanation

Explanation

• This core concept is known as Boyle's Law.

  • Relation: Pressure ∝ 1/Volume
  • Pressure ↑ → Volume ↓
  • Pressure ↓ → Volume ↑
  • They have an inverse relationship.
  • Formula: P_1V_1=P_2V_2
  • This means Pressure × Volume = Constant