What major mountain ranges are located in the Pacific Northwest?
What will be an ideal response?
The Coast Mountains and the Cascade Range.
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Researchers were studying a population of birds on Daphne Major, one of the Galápagos Islands. A drought caused many plants on the island to die. There were few seeds left for the birds to eat. Small seeds, which were easy to eat, disappeared quickly. Larger seeds remained available. Birds with thicker beaks were better able to crack and eat these larger seeds. Which of the following statements about the population on Daphne Major is TRUE?
A. Birds with thick beaks are more likely to survive during the drought. B. Birds with thin beaks are more likely to survive during the drought. C. Birds with thin beaks and birds with thick beaks are equally likely to survive during the drought. D. It is impossible to tell from the information provided.
The science of genetics was developed based on experimental studies using fruit flies
Indicate whether the statement is true or false
A prairie grass may experience grazing herbivores, wildfires, droughts, deep snow, or blazing hot days in the summer. Yet, those prairie grasses alive today are descendants of those that have survived these challenges and more
From an evolutionary perspective, these sorts of environmental challenges are identified as A) herbivory. B) predation. C) selective pressures. D) reproductive isolation.
Rocks on the ocean floor are all ____
a. granite b. geologically old c. geologically young d. sedimentary