Characid are freshwater fishes found naturally only in south america and africa. fossils of these fish are not found on any other continents. what is the most likely explanation of this distribution pattern?

Which of the following is the most likely result of converting forestland to urban development? a.the amount of land available for lumber production decreases. b.fewer trees are needed because cities are made mainly of concrete. c.people discover more efficient ways to grow trees. d. the price of lumber goes down.

The term facultative anaerobe refers to an organism that

All phases of matter may have a fixed mass