1. A or D
2. D Urbanization
3. <span>D groundwater pollution
4. </span><span>C contamination of beaches and sea vessels with pollutants.</span>
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Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
C: The arrangement and movement of the particles in the substance. Solid particles vibrate and are compact. Liquid slide past each other and are close together. Gas particles are fast moving and very spread out.