After aerobic decomposition of sewage, the solid waste that remains is rich in _____, making it a useful fertilizer.
A) phosphorus
B) nitrogen
C) potassium
D) All of the above.
Answer: D) All of the above.
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Answer the following statements true (T) or false (F)
1. Stem cells have determinate cleavage. 2. Large differences in body form can result from only small differences of gene expression. 3. Radiata have neither an anterior end nor a posterior end. 4. All eumetazoans have cell junctions.
Which form of speciation is most rapid?
A. sympatric speciation via polyploidy B. sympatric speciation via disruptive selection C. allopatric speciation on the mainland D. sympatric speciation via character displacement E. allopatric speciation on island archipelagos
One method of protecting the genetic identity of a population is the inability of sperm to fertilize eggs of a different species. This isolating mechanism is called:
A) temporal isolation. B) ecological isolation. C) behavioral isolation. D) gametic isolation.
A coral species that currently inhabits a single reef off the coast of Indonesia would be considered
A. endemic. B. a transitional form. C. exotic. D. vestigial.