The number of bird species on islands near Papua New Guinea __________ as one gets farther from Papua New Guinea.
A. increases
B. decreases
C. is unknown
D. shows an inconsistent pattern
E. None of the choices are correct.
B. decreases
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Place the five steps in building a phylogenetic tree in the proper order, from first construction step to last._____ The nucleotide or amino acid sequence must be aligned._____ Application of a selected method, using computer analysis._____ The alignment must be examined for a phylogenetic signal._____ Manual examination of the tree._____ Choose which tree-building method to use (common ones are phenetic or cladistic.)
Fill in the blank(s) with the appropriate word(s).
Defects in bone marrow stem cells result in a condition known as
A. SCID. B. AIDS. C. Di George's syndrome. D. Chediak-Higashi disease.
Decomposition reactions are commonly ________ reactions
A) endothermic B) exchange C) exothermic D) anabolic E) dehydration
If a drug is tested for harmful side effects and the results show no statistically significant side effects in the study, then it is definitely safe to use this drug
a. true b. false