las plantas crean oxígeno que hace funcionar a todos los organismos vivos. que establece que si no creamos dióxido carbono, ellos sufrirán.
I'd guess B. I'm not 100% sure though, so if you don't want to chose B...
A would be the best other option, in my opinion
Answer:
An invading.
Explanation:
When a(n) invading organism enters an established ecosystem, it competes with some of the native organisms for food. as a result, the entire ecosystem can be thrown out of balance
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Answer:
A is the chloroplast, which turns light into food
B is the Stroma, which helps transport the light to chloroplasts
Explanation: