How are costs and benefits evaluated?
a.) in terms of dollars
b.) in terms of percentages

What did the first language sound like

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Several bird species feed in a certain species of tree. each bird species feeds in a different part of the tree. which statement is true of these bird species? a. they have adapted to different niches due to competition b. they have a carnivorous relationship with the tree species. c. they have adapted to different niches due to predation d. they have a symbiotic relationship with the tree species.