Question

A ____ can be defined as a substance which an organism obtains from its surroundings and uses it as a source of energy or for the biosynthesis of its constituents​

Answer 1

Answer:

Bacteria is the answer .

But if uh look more deep AMOEBA can also come but BACTERIA is appropriate.

hope it helps and mark it brainliest if UH feel like its correct ❤

Answer 2

Answer:

here it is

Explanation

Nutrients are compounds in foods essential to life and health, providing us with energy, the building blocks for repair and growth and substances necessary to regulate chemical processes

therefore, answer is nutrient