Which of the following organisms is LEAST able to extend its geographical range in response to climate change? robins polar bears conifers butterflies

The correct answer is: Polar bears

Explanation:

Mong the given four option polar bears are last able to extend their geographical range in order to deal with climate change as they are not able to survive on land with hot temperatures and prey found in these regions. They can not survive for longer periods of time without sea ice and cold temperature.

Sea ice helps in finding their food and without sea ice, it will also greatly affect, it is one of the reasons their population decreasing as the Arctic are rising and the sea is diminishing.

from my research i have to the conclusion that decomposers, such as fungi, bacteria and invertebrates, play a critical role in nutrient cycling and without them the earth's ecosystem may not support life as we know it. elements such as carbon, nitrogen and phosphorus exist in limited amounts on earth, although huge amounts of carbon are being released into the atmosphere from underground sources now by humans. it is still extremely important that other nutrients be retained by the process of re-use. decomposers are organisms that are able to chemically break down dead material and make these elements available for use by other organisms. without this breakdown of dead material, dead bodies would pile up. so decomposers also play a role in clean up also. without them, life might not continue as we know it and dead material would overwhelm the earth.    

really dont know just need some points