Increased Lake Acidity Can Interfere with Gill Function in Fish

Q13: Inland lakes are never salty.

Q14: Some plants accumulate inorganic salts in their

Q15: To estimate relative water content which three

Q16: On a mountainside, the tree line is

Q17: Which nitrogenous waste product is so toxic

Q19: Why is rainwater slightly acidic?<br>A) it contains

Q20: 'Hard' water is generally rich in which

Q21: Populations of which North American animals are

Q22: When considering the effects of water on

Q23: Which animals produce copious dilute urine?<br>A) Frogs