Fill in the blanks to complete each statement about the heating of Earth's surface.
Earth takes in thermal energy from the Sun in a process called

Sunlight strikes Earth's surface at different angles. This angle is called the angle of

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone