Explanation

Gear is: wheel or cylinder

Pulley is: a wheel with a grooved rim

Explanation

Respiration and combustion are exothermic reactions because they release energy in the form of heat.

Photosynthesis, on the other hand, is an endothermic reaction as it absorbs energy to produce glucose.

Explanation

Scarcity means کسی چیز کی کمی یا قلت

In short supply means مختصر فراہمی میں

Explanation

The sentence has one main clause ("I will start a business") and one dependent clause ("If I do not get this job").

Sentences with an independent clause + dependent clause are called complex sentences.

Explanation

If AB = O (null matrix), it is possible that either A = O (null matrix) or B = O (null matrix), or both could be null matrices.

In matrix multiplication, if either matrix is a null matrix, the result will always be a null matrix.

Explanation

A polynomial having 3 terms is known as trinomial.

A polynomial having more than 3 terms is multinomial. 

Explanation

Validity refers to how well an assessment measures what it is intended to measure.

It shows the relevance of the assessment to the learning objectives.

Explanation

Explanation

A compound preposition is made up of more than one word, such as "according to", "in front of", or "because of".

Compound Preposition: According To, In Addition, With regard to etc.

Explanation

The decimal 0.363636... repeats without ending, so it's non-terminating and recurring.

It cannot be a terminating decimal since it doesn’t end.

It is a rational number but not a linear or quadratic fraction in this context.