3rd TEXT COMMENTARY: Whales

HEADER 
Whales Became Really Stressed During World War Two, Study Shows

SUMMARY

It has been discovered that whales suffer from stress. It is known by the amount of cortisol, a stress-response hormone, found in earwax from earplug laminae, a growth layer. By examining cortisol levels and matching them to key moments in history, they were able to see that the levels increased when whaling was at its peak in 1960. They were also stressed between 1920 and 1930 (World War I) and World War II. This shows us that whales got stressed not only by their persecution, but also by the impact of war, the noise, the submarines, the explosions.

Even though their level decreased by 1970 when whaling was reduced to zero in the Northern Hemisphere, they have been increasing ever since. It is probably because of the water’s rising temperature, but it is unknown if some other human activities may be at fault.

Whales are important to see the effect of human activity on the marine habitat.

LINK OR REFERENCE

https://www.iflscience.com/plants-and-animals/whales-got-really-stressed-during-world-war-two-study-shows/

PUBLICATION DATE

November 22nd 2018

SCIENTIFIC SCOPE

Biology

TEXT COMMENTARY

Through this information we can conclude that we are not alone in this world. All the things we do don’t only affect us human, but all the animals that live here too. We should watch out what we do to our planet and what of these shouldn’t be done. Correct them and make of this world a better place, so not only we can live a better life, but also all of the animals of the planet which suffer from our wars, our destruction and our irresponsibility. We should be aware that we are not alone in this planet, and we can still save it from disaster and suffering. If we succeed we will see a reduction of stress levels on whales, and also on humans.

GLOSSARY

None needed