Question

1. is the hard layer of solid rock materials. 2. The is an irregular surface which extends over continents and ocean beds. 3. The atmosphere is held around the earth by its 4. Distinct zones which have their own physical environment, plant and animal life are called​

Answer 1

Answer:

1. The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere . The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth.
2. A continental shelf extends from the coastline of a continent to a drop-off point called the shelf break. From the break, the shelf descends toward the deep ocean floor in what is called the continental slope.
3. The atmosphere is held around the Earth by gravity. Gravity pulls gas molecules in the atmosphere toward the Earth's surface, causing air pressure. Air pressure is the measure of the force with which air molecules push on a surface.
4. A distinct zone in the biosphere within which a community of living as well as non-living components exist and survive by mutual interaction is an called an ecosystem. The biotic or living components are human beings, plants, animals, trees and the abiotic components are land, water and air.

Explanation: