Concept Map: Construct a concept map using these terms: chordates, bony fish, amphibians, cartilaginous fish, reptiles, birds, mammals, lancelets, tunicates, invertebrate chordate, jawless fish, and vertebrates.

Which is not a likely outcome after extensive irrigation of dry farmland? useless, unproductive soil salinization of the soil depletion of groundwater nutrient-rich soil

Which of the following types of pollution is most responsible for large numbers of deaths worldwide because of unsafe drinking water? (a) nutrient pollution (b) thermal pollution (c) pathogen pollution (d) sediment pollution

What is the most common structure of volcanoes?