Limbs probably initially evolved to ____
A)walk on land
B)swim in the ocean
C)limbs have no function
D)swim in shallow streams
E)run
D
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Is the projected change of the surface temperature of the Earth worrisome? Why?
What will be an ideal response
The physical geography of sub-Saharan Africa is best described by
A) numerous mountain ranges which soar to the highest elevations on the planet B) a series of plateaus and elevated basins C) a series of rift valleys that traverse the continent from east to west, creating a high mountain range through the Sahel D) tropical lowlands that stretch across the continent E) the presence of a high mountain range that runs the length of the continent, like the Andes in South America
In plant cells, the organelles where photosynthesis takes place are
A. ribosomes. B. lysosomes. C. mitochondria. D. chloroplasts.
Use your knowledge of plate boundaries to answer whether a volcano is likely or unlikely to form at the location of the red triangle.
A. likely B. unlikely