What is the main source of carbon in an ecosystem? a. nitrifying bacteria b. the atmosphere c. photosynthesis d. cells and tissues

The source of the carbon found in living matter is carbon dioxide (CO2) in the air or dissolved in water. Algae and terrestrial green plants (producers) are the chief agents of carbon dioxide fixation through the process of photosynthesis, through which carbon dioxide and water are converted into simple carbohydrates.

b. atmosphere

Explanation:

The main source of carbon in an ecosystem is atmosphere.  The plants absorb the carbon in the form of carbon dioxide from the atmosphere, which they use as a reactant of photosynthesis to produce food in the form of carbohydrates which are indirectly called as the products of carbons. The plants are consumed by many herbivores , other animals, microbes and humans.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

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explanation:

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