The Sun is the primary source of energy for ecosystems. The Sun emits . When an organism obtains nutrients by feeding on other organisms in the ecosystem, energy is used and released. Energy changes form, but it isn’t destroyed as it transforms. This scientific law is called the law of
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i believe it's c. the trait for large beaks will be passed on to future generations through natural selection.

since eventually smaller beaks would have to find another source of food or even eventually just die out from the lack of food.

cell/ tissue/ organ/ organ system/ body