Linda is studying the interaction between porcupines, pinion pine trees, and pine bark beetles. Over the course of her study in northern Texas, she observes the behaviors of 25 porcupines, records the location of 151 pinion pines, and traps 332 beetles. Her study encompasses _________ population(s) and ___________ organisms.
Fill in the blank(s) with the appropriate word(s).
3; 508
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Answer the question using the accompanying figure. According to the graph, which biomes are defined by a mean
annual precipitation under 50 cm?
a. tropical forest, desert, and savanna b. temperate deciduous forest, savanna, and tropical forest c. boreal forest, temperate deciduous forest, and tundra d. desert, tundra, and chaparral e. desert, tundra, and grassland
Is it possible to prevent mutations entirely? What will be an ideal response?
Determining the effects of natural selection on human behavior is much more robust if ________
A) one disentangles the effects of culture from evolutionary history in detailed, controlled studies of a single culture B) groups of humans are separated into control and treatment groups for extensive experimentation C) data is collected cross-culturally to eliminate the effects of culture on behavior D) We cannot study human behavior in an evolutionary context.
What might be a result of hunting sea otters to extinction for their fur?
A) loss of killer whales B) loss of sea urchins C) loss of kelp beds D) loss of barnacles