What conclusion can be drawn from the author’s use of the word pollution in paragraph 4?

Which of the following is a presentation cue? a. crossing your arms b. mumbling c. repeating words d. whistling

Match each fossil with the layer where it’ll be present based on those conditions.

Jerrold has to buy 12 copies of a textbook which costs $36.25 per copy. how much must he spend for them?