Which of the following statements about horizons is true? . a. they are characterized by whether they are solid, liquid, or gas.. b. they are represented by roman numerals.. c. all soils have completely different horizon patterns.. d. they are defined by their different physical features.

Apositive rod is placed to the left of sphere a, and the spheres are separated. which best describes the spheres? sphere a is negative and sphere b is positive because protons from sphere a are attracted to the rod and move to sphere b. sphere a is negative and sphere b is positive because electrons from sphere b are attracted to the rod and move to sphere a. sphere a is positive and sphere b is negative because electrons from the rod move to sphere b and protons then move to sphere a. sphere a is positive and sphere b is negative because protons move from sphere b to the rod and also to sphere a.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Can you match these to the correct definition