The mass extinction that was most likely caused by the formation and retreat of glaciers was the extinction
a. cretaceous- tertiary
b. end triassic
c. permian- triassic
d. late devonian
e. ordovician- silurian

The lake of the ozarks is a human-made lake, so it collects runoff from coal strip-mining, fertilizers, resort wastewaters, and septic drainages. the average lake temperature is between 10∘c and 21∘c. consider the physical requirements for growth and multiplication that would allow fecal coliforms to “blossom” in the lake of the ozarks. which of the following would accurately describe these organisms? check all that apply. psychrophiles facultative halophiles extremophiles mesophiles hyperthermophiles