Explanation

The union of two sets A and B includes all elements that are in A, B, or both.

This is represented as: A ∪ B = {x | x ∈ A or x ∈ B}.

Explanation

0.030 has 3 significant figures because the leading zero is not counted, but the trailing zero after the decimal is significant.

Explanation

The Executive is responsible for implementing the laws made by the legislature.

It includes government officials, agencies, and departments that carry out and enforce laws.

Explanation

Carrying capacity refers to the maximum number of organisms (like cattle) that an environment (like grassland) can sustain without degradation.

It depends on available resources such as food, water, and space.

Explanation

A first person narrative uses "I" or "we", showing the story from the narrator's point of view.

The sentence "I could not believe what I had just seen" clearly uses first person ("I").

Explanation

During prophase, each centrosome forms astral rays, which are star-shaped microtubules radiating outward.

These help in spindle formation and chromosome movement.

Explanation

Explanation

The migration of people from rural to urban areas increases the demand for housing, often outstripping supply.

This rapid urbanization leads to overcrowding and a shortage of affordable housing in big cities.

Explanation

The hypotenuse is always opposite the right angle in a right-angled triangle.

Therefore, the angle opposite the hypotenuse is always 90°.

Explanation

The formula for each interior angle of a regular polygon is:

[(n – 2) × 180°] ÷ n

For a pentagon (n = 5):

[(5 – 2) × 180°] ÷ 5 = (3 × 180°) ÷ 5 = 540° ÷ 5 = 108°