Answer:
The four protein complexes of electron transport chain and ATP synthase
Explanation:
The electron transport chain present in the inner mitochondrial membrane has four protein complexes, known as complex I to complex IV, embedded in it.
Electrons from NADH are carried to the terminal electron acceptor, the molecular oxygen, via these protein complexes.
The electron transport through the protein complexes is coupled with the formation of proton motive force which in turn drives ATP synthesis with the help of ATP synthase enzyme.
We can help in reducing the problem of waste disposal by these methods:
→ By separating biodegradable substances from non-biodegradable substances.
→ By reducing, reusing and recycling non-biodegradable substances.
I believe the correct answer to your question is, that natural selection is what determines the direction of evolution.
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Definition of natural selection- Is t</span><span>he process where organisms better adapted to their environment and tend to survive and produce more offspring. </span>