Answer:
If a city has rocky soil or gets very little rainfall the city won't be practical for farming they my turn toward fishing, hunting of imports from other places.
The burning of fossil fuels is the major source of greenhouse gas emissions in the United States is the top source of greenhouse gas emissions in the US.
<h3>What are the top
sources of greenhouse gas emissions?</h3>
Carbon dioxide is the most primary effect of the green house gas emission. The consumption of fossil fuels for power, heat, and transportation is the major contributor to greenhouse gas emissions from people activities in the United States.
Water Vapor, Carbon Dioxide, Methane, Nitrous oxide, Fluorinated Gases, References and Resources are the principal of green house.
Thus, The burning of fossil fuels is the major source of greenhouse gas
For more details about sources of greenhouse gas emissions, click here:
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The correct answer is variable
Explanation: Variable is, conventionally, a representative element of the set of all possible results of a phenomenon. A variable can be classified into two types: Quantitative: its values are given in numbers.
Is this what is the main idea then it is about the earth & what the earth does and or how volcanoes are formed