Answer: A unicellular organism consists of 1 single egg, and a multicelluar organism consists of 2 or more eggs.
Explanation:
Because less animals means less energy that can be used.
Feral rock pigeons were screened for neutralizing antibodies to West Nile virus during late winter/spring and summer of 2002 and 2003. Additionally, virus isolation from serum was attempted from 269 birds collected during peak transmission