The main hypothesis about the origin of the first living organisms is called ________.
A. novel design
B. biogenesis
C. panspermia
D. chemo-evolution
Answer: B
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Meiosis functions in _____
a. asexual reproduction of single-celled eukaryotes b. growth in multicelled species c. sexual reproduction d. asexual reproduction of single-celled eukaryotes and growth and tissue repair in multicelled species e. cellular repair in multicelled species
If ________ is (are) present, secondary succession will occur rapidly
a. herbivores b. parasites c. nesting sites d. improved soil e. predators
In __________, fertilized eggs from a rare species may be implanted in a related and less rare species
a. host mothering b. captive breeding c. artificial insemination d. commercial harvesting e. sperm banking
What are soil particles that are decomposing organic matter called?
a. sand b. humus c. silt d. clay