The best and most correct answer among the choices provided by your question is the third choice or letter C.
Human activity is the primary cause of the rapid rise in loss of biodiversity.
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Answer: b. burning fossil fuels
Explanation:
When the organism become bipedal, they walk with 2 legs so there are 2 arms that were unused. Some of them try to use that hand by grabbing stick or stone, leading to tools. They start to think more to develop tools and their brain capacity become increased.
The ability to use stone tools will help in food digestion since it can break the food easier. This reduces the needs for bigger teeth/jaw.
Answer:
Thylakoid space to the stroma
Explanation:
Electron transport chain occurs in both the mitochondria and the chloroplast which is involved in the process of ATP formation in the cell. The enzyme which catalyzes the reaction of the ATP formation is ATP synthase. The ATP synthase is composed of two subunits the CF₀ and CF₁.
The CF₁ is involved in the conversion of ADP to ATP due to the rotation of the rotor in the CF₁ unit which derives its energy from the flow of protons.
In chloroplast during the electron transport chain, the proton gets accumulated in the thylakoid lumen. These accumulated protons flow back from the thylakoid lumen towards the stroma of the chloroplast through CF₀ subunit of ATP synthase.
Thus, the selected option is correct.
