Formation of the Earth's Atmosphere. The early Earth was very different from our Earth today. The early Earth experienced frequent impacts from asteroids and meteorites and had much more frequent volcanic eruptions. There was no life on Earth for the first billion years because the atmosphere was not suitable for life.
Reservoir is the answer to your question.
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Answer:
They're modified by adding genes that are encoded with toxin crystals.
Explanation:
More info:
1. The toxins are in the Cry group of endotoxins
2. It is activated by a high pH
3. It is used as a pesticide
