Explanation

The scientists explained the results of the effect of climate change on polar ice caps.

"Results of" correctly shows possession or cause in this context.

Explanation

The university is focused on providing scholarships for underprivileged students.

The correct phrase is "focused on" when referring to a specific goal or activity.

"On" properly links the verb "focused" to the action that follows.

Explanation

"Famous for" is used to highlight the reason something is well-known.

It shows that vibrant colours are the cause of the truck art's fame.

Explanation

"Famous for" is the correct phrase used to show the reason someone is well-known.

It indicates the specific achievement or role that brought fame.

Explanation

The preposition "with" is used to show partnership or collaboration between two parties.

Hence, "Pakistan has signed an agreement with China" is grammatically correct.

Explanation

"At the front door" begins with the preposition "at" and shows location related to "light."

It functions as a prepositional phrase modifying the noun "light."

Explanation

The correct preposition with apprehensive is usually "at" or "about", depending on the sentence.

Here, "apprehensive at the thought" is grammatically correct and commonly used to express uneasiness or fear.

Explanation

"I have not seen her since June."

میں نے اسے جون سے نہیں دیکھا۔

"Since" is used to indicate a starting point in time for something that continues to the present.

Explanation

The correct preposition is "from" because it indicates being away or not present in a specific place, in this case, the class.

The phrase should read: "They were absent from the class."

Explanation

The correct preposition is "to" because it indicates the direction of the action of speaking.

We say "talk to someone" when referring to communication with a person.