Explanation

 Cockroach has a 12 chambered tubular heart. Oxygenated blood enters each chamber through a pair of a slit like openings known as Ostia.

Explanation

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

Explanation

Explanation

Equator passes  through 3 continents and 3 water bodies. 

The Equator passes through 13 countries:

Ecuador, Colombia, Brazil, Sao Tome & Principe, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Somalia, Maldives, Indonesia and Kiribati.

Explanation

Finland :Country in Europe

Capital: Helsinki

Currency: Euro

Explanation

Utilitarianism, in normative ethics, a tradition stemming from the late 18th- and 19th-century English philosophers and economists Jeremy Bentham and John Stuart Mill according to which an action (or type of action) is right if it tends to promote happiness or pleasure and wrong if it tends to produce unhappiness .

Explanation

Three of the following four words are alike in a certain way and one is different.

so airport is different 

Explanation

Strawberries are the only fruit that wear their seeds on the outside.

Explanation

Persian means فارسی

Persian is mostly spoken in Iran.

Explanation

Lava is molten rock that has been expelled from the interior of a terrestrial planet or a moon.