10 most difficult nature riddles

A list of ten (out of 371) nature related questions that are the most often answered incorrectly

Nature quiz

What is the use of lily of the valley for?

Lily of the valley increases the strength of heart contraction and is used in the initial stages of heart failure. It is also very toxic at overdose. Death poisoning in children after eating a few berries or drinking water from a vase in which a lily of the valley bouquet was made was described.

kwidzinskaangelika

flowers riddles

How much of Australia coastline is desert? (Out of the total 21,262 miles/34,218 km)

140 miles (225 km)

1,000 miles (1,600 km)

3,000 miles (4,800 km)

14,000 miles (22,500 km)

More than 40% of Australia's land is classified as desert, but almost all of it is located inland. The Great Sandy Desert is the only one to extend to the coast, forming the long sweep of the Eighty Miles Beach (which is actually 140 miles long).

Cleo

geography of Australia riddles

For what main reason do chameleons change color?

to match their surroundings

as a social signal to other chameleons

their skin change color when pressed

chameleons do not change color

Colour change in chameleons has various functions, depending on the species, but the most common is social signalling. Only a few species, such as Smith's dwarf chameleon, also adjust their colours for camouflage

globalquiz.org

reptiles riddles

Which of these countries has the highest level of afforestation?

Among developed countries, Japan has one of the highest levels of afforestation, over 68% of the area - being surpassed only by Sweden and Finland.

forests riddles

Which animals are the most threatened by a prion disease?

Scrapie is infectious and incurable. Recent studies suggest prions may be spread through urine and persist in the environment for decades. Scrapie occurs in Europe and North America, but to date, Australia and New Zealand (both major sheep-producing countries) are scrapie-free.

ex-terminator

diseases riddles

Which animal doesn't belong to odd-toed ungulates?

Odd-toed ungulates include the horse, the tapir, and the rhinoceros.

Paweł Kołodziejczyk

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wikipedia → Odd-toed ungulate

biology riddles

How many active volcanoes are there in Europe? (excluding islands)

Vesuvius is the only volcano on the European mainland. The rest of them are located on European islands, the most in Iceland (around 20).

Ninjai

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wikipedia → Mount Vesuvius

volcanos riddles

Aside from cattle, which animal provides most milk used by humans?

Water buffaloes provide 11% of the world's milk, which is much more than goats (2%, third place). Buffalo's milk contains higher levels of total solids, crude protein, fat than cow milk; it gives therefore more cheese, butter and other dairy products. The top buffalo milk producers are India and Pakistan.

globalquiz.org

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wikipedia → Water buffalo#Dairy products

Pakistan riddles

Toadstool rusty brown

The shaggy parasol is popularly praised as a choice edible mushroom. However, it contains toxins which can cause gastric upsets when eaten raw or undercooked, and some individuals show a strong allergic response even after cooking.

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wikipedia → Shaggy parasol

mushrooms riddles

Who was the first to create a zoo and botanical garden for scientific study?

Throughout his conquests of Asia, Alexander the Great collected many plant and animal specimens for Aristotle’s research. This allowed Aristotle to develop in Athens the first zoo and botanical garden in existence.

globalquiz.org

ancient Greece riddles

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Nature quiz