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natita [175]
3 years ago
8

Which of the following best describes biogeochemical cycles? A. They cycle elements through the biotic and abiotic components of

an ecosystem. B. They cycle elements through the plants and trees of an ecosystem C. They cycle elements through the plants and soil of an ecosystem. D.all of the above
Chemistry
1 answer:
Ad libitum [116K]3 years ago
6 0

Answer:

A. They cycle elements through the biotic and abiotic components of an ecosystem.

Explanation:

Chemical elements such as nitrogen, carbon, phosphorus etc. moves between the living and non-living parts of an ecosystem in the biosphere. The cycle of these elements between these counterparts (abiotic and biotic) is referred to as the BIOGEOCHEMICAL CYCLE.

Firstly, the biotic components of an ecosystem refers to the living organisms such as plants, animals, microbes etc while the abiotic components are the non-living parts such as soil, water etc. Therefore, according to the description given in the options, option A describes what a BIOGEOCHEMICAL CYCLE best.

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In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. Which postulate of ki
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Answer:

Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.

Explanation:

When a gas is paced in a container, the molecules of the gas have little or no intermolecular interaction between them. There is a lot of space between the molecules of the gas.

The gas molecules move at very high speed and collide with each other and with the walls of container.

The collision of these particles with each other is perfectly elastic hence the kinetic energy of the colliding gas particles do not change.

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3 years ago
Seawater is composed of salt, sand, and water. is seawater a heterogeneous or homogeneous mixture? explain
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A mixture is said to be homogeneous if its composition is uniform throughout the mixture. They are referred to as solutions. On the other hand, heterogeneous mixture does not have uniform composition. The substances present in the mixture have visible difference or phases.

Sea water is composed of salt, sand and water. Here, salt and water form homogeneous mixture but due to the presence of sand, the mixture is heterogeneous. Salt dissolves in water and the solution has uniform composition but sand does not dissolve in water, even after vigorous mixing, after some time it settles at the bottom resulting formation of layers. Thus, sea water containing salt, water and sand is a heterogeneous mixture.


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3 years ago
Explain how scientists use geologic time to determine the age of land forms.
valentina_108 [34]
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