Which of the following are in order from primary
producer to 4th trophic level?
a. grass: coyote: bird: grasshopper
b. coyote: bird: grasshopper: grass
c. bird: grasshopper: grass: coyote
d. grass: grasshopper: bird: coyote
e. none of these
Answer: d
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Which group describes a population?
a. members of a population are all genetically identical b. members of a population live together and interbreed c. a population may include both predators and prey d. members of a population spend much of their time living apart e. members of a population can live in two geographic areas
Which of the following donate(s) phosphate in the
Calvin-Benson cycle? a. NADPH b. ATP c. RuBP d. PGAL e. all of these
Smog forms when pollutants in the air react with each other in the presence of sunlight and carbon dioxide
Indicate whether the statement is true or false
The partly decayed organic portion of soil is called:a
silt. b. clay. c. sand. d. humus. e. castings.