In which of the following types of waters do seasonal climatic temperature changes result in distinct chemical and microbial stratification?
A. Lakes in temperate areas
B. Lakes in tropical areas
C. Fast flowing rivers
D. Oceans
Answer: A
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Which of the following has the phases of the Calvin-Benson cycle in the correct order, starting with the entry of ribulose 1,5-bisphosphate?
A. Carboxylation phase, reduction phase, regeneration phase B. Reduction phase, carboxylation phase, regeneration phase C. Carboxylation phase, regeneration phase, reduction phase D. Regeneration phase, carboxylation phase, reduction phase
Of what substance are intervertebral disks
made?
a. smooth muscle b. cartilage c. ligaments d. loose connective tissue e. epithelial tissue
The first structure to emerge from a seed is a ____
a. root b. shoot c. cotyledon d. leaf e. flower
Which structures are characterized by its smallest branches ending with a large flame cell?
a. hepatic tubules b. nephrons c. Malpighian tubules d. protonephridia