A community of plants and animals that depend upon one another and their surroundings for survival

Which product would have been most likely to have been traded in this area at this time?

Which significant event in texas history occurred in 1876?

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste