as i've said before many times. it isn't that the climate is changing that is a problem, but the rapid rate of change. that presents a lot of challenges and issues for wildlife that cannot adapt. every bit of diversity lost during these changes means it is a less efficient system to harvest and transmit the energy from the sun and the earth - along with human induced destruction these losses mount. it isn't good. if you don't undestand this and the implications i suggest further studies until you do.