Tugas

Koalas Keep Cool

National Geographic, 2015

 By: Daniel Stone

When things heat up down under, koalas know how to keep their cool. Now thanks to infrared photography, humans can see how they do it.

A 2014 study led by university of melbourne ecologists showed that when summer temperatures climb up- often above 104 f- koalas climb down, pressing their bodies close to the trunks of trees. Each tree has its own microclimate says research natalie briscoe and can bemore than 12 f ooler than the air. So for a koalas, whose belly fur is relatively thin, tree hugging is like standing in front of an open  fridge. As a way to regulate body temperature. It’s more efficient than panting or fur licking-koala- cooling methods than use twice as much water.

In a separate study, university of sydney biologist mathew crowter found that  koalas tend to chill out in”shelter trees”like casuarina rather than in “ food trees’ like eucalyptus. But in a heat wave either will do. As extreme heat become more frequent, tree hugging could becomeeven more crucial.

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1.      1. When things heat up down under, koalas know how to keep their cool

When things heat up down under: connector

koalas know how to keep their cool: object

 

2.     2.  A 2014 study led by university of melbourne ecologists showed when summer temperatures climb up- often above 104 f- koalas climb down

when summer temperatures climb up- often above 104 f: connector

A 2014 study led by university of melbourne ecologists: subject

koalas climb down: object

3.    3.   So for a koalas, whose belly fur is relatively thin, tree hugging is like standing in front of an open  fridge

So for a koalas: subject

whose belly fur is relatively thin: connector

tree hugging is like standing in front of an open  fridge;object