Infants acquire natural passive immunity from maternal antibodies transferred across the placenta or in breast milk
Indicate whether the statement is true or false.
Answer: TRUE
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True or False: Intrasexual selection includes physical competition among males, whereas intersexual selection involves advertisement displays
A. true B. false
In this simulation, how is respiration rate being measured?
a. CO2 production b. CO2 consumption c. O2 production d. O2 consumption
Where is the biomass pyramid upside-down?
a. among birds b. in forest habitats c. in tundra habitats d. in a pond or a sea e. in prairie habitats
What conclusion can you make from comparing the bones in a bird wing, a bat wing, and a pterodactyl wing?-These organisms evolved in a similar environment.
a. These organisms share a common ancestor with each other. b. The bird and bat evolved from the pterodactyl. c. These organisms evolved in the same place. d. Flight is a good adaptation for land-dwelling organisms. e. These organisms evolved at the same time.