West Nile lead to a decline in susceptible avian and human hosts, with a subsequent decline in the number of cases since 1997
Answer:
The answer is C
Explanation:
That is the only one they have in common.
<span>The income of a country is related to its ecological impact because depending on the ecological conditions on which economic factors depend and the income productions they generate when the conditions are bad, part of the income must go to ecological recovery, and part of the income should be earmarked for ecological care and preservation. When conditions are good, the income earmarked for ecology is lower, but part of the income must always be contributed to the preservation and maintenance of the ecology of a nation.</span>
It sends gasses out in the earth