2 years ago

Why the Carbon must be cycled through the carbon cycle?

1 answer:

3 0

Answer:

The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Since our planet and its atmosphere form a closed environment, the amount of carbon in this system does not change.

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The archaebacteria kingdom has been on earth for at least ________ years.

nata0808 [166]

Answer:

Archaea are found in the harshest environments on Earth, and are the oldest known organisms on Earth, appearing in the fossil record over 3.6 BILLION years ago

Explanation:

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2 years ago

A ___________ is the smallest unit of life?

ohaa [14]

Answer:

Cell

Explanation:

A cell is the smallest unit of a living thing.

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3 years ago