Answer: Ethylene.
Ethylene is also an important natural plant hormone, and is used in agriculture to force the ripening of fruits, and also is naturally occurring (but not in such high amounts such as the ones you see on store shelves -- these are forced to ripen quickly compared to naturally occurring levels (which has low levels of ethylene at a time in comparison of forced ripening which has increased levels of ethylene at once).
Ethylene it is what causes a maturing apple to go red, and then that red apple starts to wither, get squishy/ soft, and then it starts to rot.
Answer:
i think discovery
because people are curious
and curiosity is an important reason to live
no one wants to live in vain
Greetings from Turkey
Explanation:
GOOD LUCK ツ
Temperature
water
solar energy
When the sun rises it gives us energy. we use rivers for drinking and we also use rivers for transportation.
Answer:
An invasive species enters the environment.
Explanation:
All other answers already naturally happen in an environment so they are stable. But if an invasive species enters, the ecosystem will be less stable because invasive species dominate ecosystems which isn't natural to the animals that live there. So for example, if someone introduced an invasive species to the ecosystem, it can cause many changes like if it was a predator, there'll be less primary consumers (the animals that eat plants) because the invasive species isn't natural to them.
