Which of the following statements is true? The crust below the continents is made of basalt and salt sediment.

According to continental drift theory, the continents used to be joined together.

The crust below the continents is thinner than the crust below the ocean.

The Earth's tilted axis is the main reason for day and night.

In attempt to solve the working problems created by the industrial revolution, the united states and many countries in europe considered and/or adopted

Which of these is not a function of some membrane proteins ? a.allowing polar molecules to enter the cell b.recognizing other types of cells c.receiving messeges from other cells b.carrying messages to oher cells

The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.