Describe a common biotic and a common abiotic component of two terrestrial ecosystems. Then, describe a common biotic and a common abiotic component of two aquatic ecosystems.(2 points)

This schedule shows the opportunity cost of producing doughnuts, bagels, and croissants. refer to the schedule and use the drop-down menu to answer each question. on day 2, raj makes 70 more bagels than on day 1. what is the opportunity cost of producing 70 more bagels? on day 3, raj makes 50 more croissants than on day 2. what is the opportunity cost of producing fifty more croissants?

He chart shows the 112th u.s. congress (2011–2012). based on the information in the chart, if the independents in the senate chose to vote with the republicans in the senate, the republicans would

How did the end of the mexican american war result in growing sectionalism in the united states?