Explanation

Octopuses have blue blood, three hearts and a doughnut-shaped brain.

Explanation

A closed economy is one that does not swap their trading with outside economies.

The closed economy is independent, meaning no imports enter the country and no exports leave the country.

Explanation

Jacket is a garment for the upper body usually having a front opening, collar, lapels, sleeves, and pockets

Explanation

The polar bear is a hyper carnivorous bear whose native range lies largely within the Arctic Circle, encompassing the Arctic Ocean, its surrounding seas and surrounding land masses. It is the largest extant bear species, as well as the largest extant land carnivore.

Explanation

Elephants are the largest existing land animals. Three species are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. Elephantidae is the only surviving family of the order Proboscidea; extinct members include the mastodons.

Explanation

Koalas have fingerprints which are almost identical to those of humans.

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Snakes use their tongues for collecting chemicals from the air or ground. 

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Most ladybirds have oval, dome-shaped bodies with six short legs. 

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A melon is any of various plants of the family Cucurbitaceae with sweet, edible, and fleshy fruit. The word "melon" can refer to either the plant or specifically to the fruit.

Explanation

Instagram is an American photo and video sharing social networking service created by Kevin Systrom and Mike Krieger. 

Date launched: October 6, 2010