The andes and the pampas have a wide range of ecosystems because of a. desertification. b. deforestation. c. the effects of altitude. d. globalization.

Alaina wants to decide whether her current cell phone plan is better than a package that another company offers. to compare the two plans, she plotted two lines on a graph, where y represented the total cost of one month’s service and x represented the megabytes of data that she used in a month. which part of the graph will represent the cost per megabyte of data used in each plan?

Which of the following is a way that advancements in technology improve humans' ability to measure air quality and protect human health?

Trade routes emerged along which coast when arab and indian traders from around the indian ocean mixed with the bantu people from africa's interior? a. swahili coast b. guinea coast c. drakensberg coast d. namib coast