Which of the following pairs of traits are homologous?
a. butterfly wings and bat wings
b. the surface areas of bird and bat wings
c. the bones of bird and bat wings
d. butterfly wings and bird wings
e. bird wings and bat wings
C
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Immigration and __________ permanently affect
population size, but __________ does not. Fill in the blank(s) with the appropriate word(s).
In not more than three sentences, explain why a plant placed in a window grows toward the light. What will be an ideal response?
Select the false statement:a
Biomass reduction from one trophic level to the next is approximately 50 %. b. Biomass reduction from one trophic level to the next varies widely in nature. c. Biomass reduction can be measured as dry weight. d. Biomass may be measured as live weight. e. Biomass in an ecosystem can be illustrated using a pyramidal-shaped graph.
Which number describes a Transmission Electron Microscope?
What will be an ideal response?