is tree density positively correlated to mosquito densities?why?

Tree density is positively correlated to mosquito density because mosquitoes depend on trees for their life cycle and nutrition. Mosquitoes lay their eggs in tree holes and larval development takes place there. If larval population is restricted due to absence of tree holes, mosquito population will fall. Also, mosquitoes feed on plant sap for their survival. So more plants in a particular area will support more population of mosquitoes to survive. 

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