Paleozoic
What will be an ideal response?
three separate mass extinctions occurred during this era
first jawed fishes occured during this era
coal forming forests flourished during this era
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In a forest you may observe that plants on the forest floor are not as vigorous as other plants; this would most likely be because:
A. They do not get adequate sunlight. B. Water is limiting. C. Their leaves are smaller and cannot capture as much light. D. They are competing for minerals from other plants. E. They are more affected by gravity than taller plants.
In the global assembly line, manufacture and assembly is most likely to take place where
A) taxes are low. B) labor is cheap. C) resources are nearby. D) democracies are solid. E) human rights are highly valued.
Answer the question using the accompanying figure. Which branch of this phylogenetic tree identifies Bacteria?
a. A b. B c. C d. D e. E
If interference is complete, what would be the frequency of double crossovers?
A) 0.75 B) 2 C) 0.25 D) 0 E) 1