4. Read the following sentences: "When the biodiversity of a region declines, many of the organisms critical to this filtering process can disappear. Therefore, pressures on
the freshwater supply can cause biodiversity to decrease, which can cut the drinkable
water supply even further."
Based on this information, what can be concluded?

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above

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

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]