Explanation

In the lecture method, questioning is used to engage students and assess their understanding.

It encourages critical thinking and active participation during the lesson.

Explanation

The property a × (b + c) = a × b + a × c distributes multiplication over addition.

This is called the Distributive Law of Multiplication over Addition.

Explanation

A rational number is any number that can be expressed as p/q, where p and q are integers, and q ≠ 0.

Decimals that terminate or repeat (e.g., 0.75 = 3/4 or 0.333... = 1/3) are rational numbers.

Explanation

To simplify the expression, follow the order of operations:

2(7x - 3) + 5(-2x + 6)

Distribute the coefficients:

14x - 6 - 10x + 30

Combine like terms:

4x + 24

Explanation

The sentence is in passive voice, so the past participle "celebrated" is needed.

"Nasirudin Day" is the subject receiving the action.

Explanation

The retina contains light-sensitive cells (rods and cones) that detect light and color.

It transmits visual signals to the brain via the optic nerve.

Explanation

Environmental biotechnology applies biological processes to produce renewable energy (e.g., biofuels) and improve food production sustainably.

It helps in waste management, pollution control, and developing eco-friendly agricultural practices.

Explanation

"Sight" refers to something seen.

"A sorry sight" is a common phrase used to describe something pitiful or unfortunate.

Explanation

"To" is the correct preposition used when addressing someone.

"I say good morning to father and mother" is the proper sentence structure.

Explanation

The calyx is the outermost whorl of a flower, consisting of sepals, which are usually green and leaf-like.

It protects the inner parts of the flower, especially in the bud stage, before blooming.