<span>The two organelles that are thought to have arisen from endosymbiosis would be mitochondria and chloroplasts. C
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Answer:
Photosynthesis uses carbon dioxide to make sugar and produces oxygen as a byproduct. Respiration uses oxygen to release energy from stored sugar and produces carbon dioxide as a byproduct. ... However, if the plants are growing, then over a period of 24 hours they will produce more oxygen than they consume.
Living systems also follow the law of conservation of energy. Energy changes form as it flows through an ecosystem, but the total amount of energy in the system remains constant. Food chains show how energy flows in an ecosystem. ... Thus producers convert light energy from the Sun to the chemical energy in carbohydrates.
