Explanation

P waves (primary waves) are the fastest seismic waves generated during an earthquake.

They travel through solids, liquids, and gases, compressing and expanding the material.

S waves (secondary waves) are slower and can only move through solids.

P waves are the first to be detected by seismographs.

Their higher speed helps in early warning systems for earthquakes.

Explanation

Glucose is mainly synthesized in plants through photosynthesis.

Carbon dioxide provides the carbon atoms needed for glucose formation.

Water (H₂O) provides hydrogen and electrons but does not contribute carbon.

Explanation

• Bed and furrow irrigation is a method where crops are planted on raised beds and water flows in the furrows.
• It is a type of flood irrigation designed to conserve water and improve drainage.
• Commonly used for row crops like vegetables, sugarcane, and cotton.

Last verified on 25-01-2026

Explanation

During beta-minus (β⁻) decay, a neutron transforms into a proton.

This process emits an electron (β⁻ particle) from the nucleus.

Along with the electron, an antineutrino is also emitted to conserve energy and momentum.

This conversion increases the atomic number of the element by one.

Beta decay is common in unstable isotopes trying to achieve nuclear stability.

Explanation

Pakistan launched its first, entirely domestically designed satellite from the Jiuquan Satellite Launch Centre in China

Satellite Name: PRSC-EO1 (or EO-1)

Date: January 17, 2025

Developer: Pakistan Space and Upper Atmosphere Research Commission (SUPARCO)

Purpose: To monitor natural resources, support food security, and assist in urban planning 

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Explanation

The main purpose of cellular respiration is to convert chemical energy stored in nutrients (specifically glucose) into ATP (adenosine triphosphate),

They acts as the usable energy currency for cellular processes.

It breaks down glucose in the presence of oxygen to produce ATP, carbon dioxide, and water. 

Explanation

• Journal of Agriculture Research is the official scientific periodical of Agriculture Department Punjab.
• It publishes peer-reviewed research related to crops, soil, and farming practices.

Additional information:

• Subject Coverage: Crop science, soil science, agronomy

Last verified on 25-01-2025

Explanation

• The relationship between two or more variables is called correlation.
• It measures how one variable changes in relation to another.

Additional information:

• Regression – Predicts the value of one variable based on another
• Variation – Degree of spread or dispersion in data
• Covariance – Shows direction of linear relationship
• Standard deviation – Measures average deviation from the mean

Last verified on 25-01-2026

Explanation

• Evaluation done using numbers or measurable data is called quantitative evaluation.
• It focuses on numerical assessment of performance, yield, or results.
• Commonly used in education, agriculture, and research studies.

Last verified on 25-01-2026

Explanation

• The process of sending information through a channel is called transmission.
• It involves a sender, message, channel, and receiver.
• Effective transmission ensures the message is accurately delivered.

Last verified on 25-01-2026