Question

1. explain why deep open oceans a low abundance of life compared to coastal regions. (pages 82 and 83) apply the big idea

Explanation:

Coastal regions have more nutrients from land - runoff like rivers carrying sediments and organic matter. They also have more sunlight penetration in shallower waters and more complex habitats like estuaries and coral reefs. In deep open oceans, nutrients sink to the bottom, sunlight is limited in deeper layers, and habitats are less diverse and complex.

Answer:

Deep open oceans have a lower abundance of life compared to coastal regions because coastal areas receive more nutrients from land - based sources, have better sunlight penetration in shallower waters, and offer more complex habitats, while deep open oceans have limited nutrients in surface waters, less sunlight in deeper zones, and less diverse habitats.