Explanation

Explanation

A person with Down's syndrome has three copies of chromosome 21 instead of the normal two.

It leads to developmental and intellectual delays.

Explanation

The pith is the central part of the stem, mainly used for storage of nutrients and water.

It is surrounded by vascular tissues that transport water and nutrients throughout the plant.

Explanation

Problem-Based Learning (PBL) presents students with real-world, open-ended problems without a clear solution.

It encourages group collaboration, critical thinking, and self-directed learning to find solutions.

Explanation

The correct order of adjectives in English typically follows: Determiner + Opinion + Size + Age + Shape + Color + Noun.

"That (determiner) small (size) new (age) square (shape) red (color) bag (noun)" follows this standard adjective order.

Explanation

Given logx (4/9) = 2

This can be rewritten as:

x² = 4/9

Taking the square root of both sides:

x = ±√(4/9)

x = ±2/3

Since the base of a logarithm is typically positive, we consider x = 2/3.

Explanation

Let's solve the equation:

4/5 (x + 7) = 3(2x - 7)

Multiply both sides by 5 to eliminate the fraction:

4(x + 7) = 15(2x - 7)

Expand both sides:

4x + 28 = 30x - 105

Subtract 4x from both sides:

28 = 26x - 105

Add 105 to both sides:

133 = 26x

Divide both sides by 26:

x = 133/26

Explanation

Sigmund Freud, the founder of psychoanalysis, introduced the concept of defense mechanisms as strategies used by the ego to manage conflict between the id and superego.

These mechanisms—like repression, denial, and projection—help reduce anxiety by distorting reality unconsciously.

Explanation

The sentence has one independent clause ("I will start my own business") and one dependent (if) clause ("If I don’t get selected").

This structure makes it a complex sentence.

Explanation

Boiling a magnet (especially in water) does not generate enough heat to affect its magnetic properties.

In contrast, hammering, heating, or dropping disturb the alignment of magnetic domains, leading to demagnetization.