They didn't stop laughing until the end of the film. is it a preposition or subordinating conjuntion

Compared with the cost of tuition, fees, and books for a traditional college course, the cost of a CLEP exam is:

Newborn reflexes A) are consciously controlled behaviors B) are unique to each individual newborn C) have little impact on development D) contribute to infant survival

Which of the following statements about the sugar tariff in the US is correct

Where do i put the colon in this sentence the boy drowned it didn't sound true to him?

According to the author, what was "the importance of the Disney studios to the war effort" perhaps best demonstrated by?

A scientist studying cold medicines hypothesizes that one particular medicine is more effective than the others in the study. He attempts the experiment several times. Each attempt produces a different result.

Over the last several decades scientists have considered the problem of nonrenewable natural resources, such as fossil fuels. Humans are using fossil fuels at a rapid rate and scientists believe that one day, we will run out of usable fossil fuels.

Explain what it means to say that both the atmosphere and forests are carbon reservoirs. How is carbon transferred back and forth between them?

As a manager of an office Shellie is responsible for hiring and training new staff as well as ensuring that the employees know and understand their jobs. hiring training and having oversight over staff are referred to as shellie's ___. A.

Next to hydrogen and oxygen what are the 2 most abundant elements in ocean water