The ocean floor topography is
A. varied.
B. unknown.
C. smooth.
D. flat.
Answer: A
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Which waves indicate the most extensive shadow? Why?
A. S waves-because they cannot travel through the liquid outer core B. P waves-because they cannot travel through the solid inner core C. S waves-because they cannot travel through the solid inner core D. P waves-because they cannot travel through the liquid outer core
Matching
a. functional diversity c. ecological diversity b. genetic diversity d. species diversity 1. Caribbean snails of the same population exhibit a variety of shell colors and banding patterns. 2. Coastal states in the United States typically have more ecosystems than land-locked states. 3. Some tropical forests contain thousands of producer species. 4. Nutrients typically cycle much faster in tropical areas than in polar areas. 5. Estuaries and wetlands have very high primary productivity. 6. Coral reefs are known for their very high number of species. 7. Areas with both mountain ranges and coastal ecosystems have high diversity. 8. An early fox population evolved into the grey fox and arctic fox.
The largest sharks and rays are ________.
A. predators B. plankton feeders C. carnivores and predators D. carnivores and plankton feeders E. carnivores
Many scientific advances have been made toward accurately collecting evidence for global climate change. Explain one technique used: (1 ) to measure changes that have occurred in atmospheric CO2 over the past 500,000 years; and (2 ) to measure the
long-past temperatures over this same period of time. What will be an ideal response?