Research shows that the average height of all Earth's oceans is increasing over time. Which of the following is a possible cause
? O A. Earth's rotation is changing direction.
O B. Upwellings are becoming more frequent.
O C. Polar ice caps are melting.
O D. Low tides are disappearing.
Riparian zones are important to the natural environment because they function as natural biofilters and protect the aquatic life and the aquatic environment.