Which statements describe oceanic crust? Select the two correct answers. I A. It is made of all types of rocks.
B. Its age ranges from very young to more than 4 billion years old.
n C. It is between 25 and 70 km thick.
D. It contains silicate minerals high in iron and magnesium
E. It is formed at zones of volcanic activity on the ocean floor.
SUS
PREVIOUS

Options (C) and (D)

Explanation:

The oceanic crust is usually about 5-10 km thick and is comprised of rocks that are basaltic in nature. These rocks are primarily made of minerals such as iron (Mg) and magnesium (Mg) and a comparatively lesser amount of silicate materials. Much of the oceanic rocks are destroyed due to the constant plate tectonic movement. It has been found that the oldest oceanic rocks found on the earth's crust is about 180 million years old only. The new oceanic crust often forms along the mid-oceanic ridge in a divergent type of plate motion, where new materials are added to the crust. Those rocks that are present along the mid-oceanic ridge are the younger rocks and those that are away are the oldest rocks. These oceanic crust are comprised of the volcanoes that form adjacent to the convergent plate boundary.

Thus, the correct answer is options (C) and (D). Brainelst please

C &D

Explanation:

Oceanic crust is between25&75 km thick. Its contain silicate minerals high in Iron and Magnesium.

answer; i believe the answer is hydraulic action;

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."