Answer:
Multi-step process
Because it can be done twice or more
Answer: c
Explanation: Plants and animals need nitrogen to make proteins but they cannot take it in from the air. Because nitrogen is unreactive as a gas, it has to be transformed into a new molecule. When bacteria in the soil takes nitrogen from the air, it becomes nitrates. Finally, it can move through the food chain in this form.
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Answer:
Benedict's solution is the indicator for sugar which is made up from copper sulfate and sodium hydroxide
the positive result is the observation of brick-red precipitate.
Answer and explanation
Due to technical problems, you will find the complete answer and explanation in the attached files
