High levels of which of the following physical properties of water is likely to improve the biotic index of a nc stream?
a) algae growth
b) decaying matter
c) suspended solids
d) dissolved oxygen

Drastic boundary changes can occur for all of the following reasons except for a. a shift in the way a river flows b. the collapse of a government system c. a conflict between two neighboring groups d. one country's decision to sell land to another country select the best answer from the choices provide

The impact of a large asteroid comet with earth has been proposed to have caused the extinction of the dinosaurs. the impact site of this comet is in or near

Which of the following best describes asbestosis?