Water clarity, or turbidity, measures the amount of sediment and debris in a body of water. Since light cannot shine into water with low clarity, turbidity is a factor that is considered when monitoring water quality. Which of the following organisms would be most negatively affected by unclear water? A. plants growing on the lake floor
B. trout feeding near the lake surface
C. trees growing along the lake shore
D. geese nesting on the bank of the lake

Which would best keep the oxygen cycle stable? a. cutting down jungles to create farmland b. eliminating parks in large cities c. dumping toxic chemicals into the ocean d. reducing the amount of deforestation d. reducing the amount of deforestation

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen

Which is an example of a vestigial structure? a. tail of a monkey b. fin of a fish c. flower of a plant d. tailbone of a human