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

Environmental & Atmospheric Sciences

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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

Environmental & Atmospheric Sciences

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

Environmental & Atmospheric Sciences

Is the projected change of the surface temperature of the Earth worrisome? Why?

What will be an ideal response

Environmental & Atmospheric Sciences

In plant cells, the organelles where photosynthesis takes place are

A. ribosomes. B. lysosomes. C. mitochondria. D. chloroplasts.

Environmental & Atmospheric Sciences