Trees are a key part of our ecosystem.The party also says it will immediately bring in dental care for those without insurance and would work towards implementing universal dental care.But if you look at the numbers recently released by the US Forest Service's National Forest Inventory (NFI), one thing is abundantly clear: tree populations are declining rapidly in North America.The party says this would bring its platform the closest to meeting the provincial and territorial premiers' demand to have the federal government cover 35 per cent of all health-care costs -- which would amount to increasing the Canada Health Transfer by $28 billion per year.