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If want a direct answer it would be the decrease in mice, but if you want to get technical the decrease in grain spills caused mice to leave so that would be the indirect cause
The temperature pattern which is being shown by the isotherms is that: D. temperatures increase from the center of the country toward the Southwest.
<h3>What is an isotherm?</h3>
An isotherm refers to a line that is drawn on a map to join points that are having the same temperature, in order to show the distribution of temperature in a geographical area on Earth's surface.
Based on the weather map in the image attached below, we can infer and logically deduce that temperatures typically increase from the center of the country toward the Southwest.
Read more on temperature here: brainly.com/question/2339046
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Answer:
the grass grew taller and the hawk population declined
Explanation:
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