The first life on Earth was:

A. Autotrophic A.

B. Heterotrophic B.

C. Photosynthetic C.

D. Aerobic D.

Correct Answer: B সঠিক উত্তর: B

Explanation ব্যাখ্যা

Heterotrophic: This means the first organisms obtained their energy and nutrients from pre-existing organic molecules in the environment, rather than producing their own food.
Autotrophic: This refers to organisms that can synthesize their own food using sunlight (photosynthesis) or other inorganic compounds.
Photosynthetic: While photosynthesis eventually evolved, it wasn't present in the earliest life forms.
Aerobic: Early Earth's atmosphere lacked oxygen, so the first life was anaerobic.

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Correct Answer: B সঠিক উত্তর: B

Explanation ব্যাখ্যা

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