Dying this map of the continents and ridges on Earth. Why do the shapes of parts of Africa, South America, and North America appear to fit together like puzzle pieces?
A. The continents are spreading apart as Earth grows larger.
B. The continents were connected, but a meteor broke them apart.
C.
The continents have a large valley between them that has filled with ocean water.
D. The continents were connected, but expanding mid-ocean ridges have pushed them apart.

Which best describes the first law of thermodynamics as compared to the second law of thermodynamics? a. the first law describes how thermal energy is conserved but not the direction it moves. b. the first law describes the direction thermal energy moves but not how it is conserved. c. the first law describes how thermal energy can be created but not how it can be destroyed. d. the first law describes how thermal energy can be destroyed but not how it can be created.