A.) half - life of a radioactive substance is defined as the time during which concentration of the substance becomes half the initial value.
Usually when it rains the worms surface!
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Answer:A cell is the smallest unit of life, also called the 'building blocks of life' because cells multiply and differentiate to form a multicellular organism as well as give rise to new organism by forming gametes or reproductive spores.
Explanation:
Answer:
region 2 and region 3
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you can tell by the color of the land my friends^^
