Which worm phylum lacks body segmentation?
A. Flatworms
B. Roundworms
C. Annelids
D. Both flatworms and roundworms
Answer: D
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Under what condition does hemoglobin tend
NOT to release oxygen?
a. low oxygen concentrations b. warm temperatures c. low pH d. low carbon dioxide concentrations e. all of these are conditions under which hemoglobin tends to release oxygen
Species interactions between members of a
community include __________, which harms both species. Fill in the blank(s) with the appropriate word(s).
If the tallest and shortest individuals of a population of humans do not survive and reproduce as well as the individuals of "average" height, which type of selection would most likely result?
A) Directional selection B) Artificial selection C) Stabilizing selection D) Disruptive selection
All gram-negative bacteria are classified as proteobacteria
Indicate whether the statement is true or false