Hese cross sections show the paleozoic evolution of the northern appalachian mountains. drag the art in the correct order, arranged from the youngest (most recent) at the top (number 1) to the oldest at the bottom (number 5). move your cursor over each drop box to get hints about that time period.

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

Which of these is a drawback of using natural gas? a. it is fairly safe for use in homes.b. it burns more cleanly than crude oil products.c. scientists have developed new ways of extracting it.d. during its extraction, groundwater can be contaminated.

These are the abiotic factor or biotic factors that restricts the numbers, reproduction, or distribution of organisms.