Phenotypic variation exists within traits due to:
A. Environment
B. Genotype
C. Both of these
Answer: C
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Which of the following irrigation systems produces the most biomass per unit of water applied?
A) furrow-dike irrigation B) sprinkle irrigation C) flood irrigation D) furrow irrigation E) drip irrigation
Why is the term dark reaction inaccurate in photosynthesis?
A. The end product emits light. B. It occurs in light or dark. C. We now know that light directly provides the energy for the reaction. D. The chloroplast is non-functional in the dark so there has to be light for the reaction to take place.
Lasers are classified according to their ________
A) source B) application C) range D) intensity
A series RL circuit contains two resistors. The resistors are 60 ? and 30 ?. When calculating the circuit values, the total resistance used is _____.
A. 30 ? B. 60 ? C. 80 ? D. 90 ?