Answer: A) Biosphere Explanation: A biosphere is the sum of all the ecosystems established on planet Earth. An ecosystem is an area in which the plants and animals all interact to create a living environment. Therefore ecosystem is a smaller unit of earth, all ecosystems together form the earth.

Answer: C) Sudan Explanation:

Answer: D) Oxygen Explanation:

Answer: D) Aruna Budda Reddy Explanation: Aruna Budda Reddy has created history by becoming the first Indian to win an individual medal at the Gymnastics World Cup in Melbourne, Australia. She clinched a Bronze medal in the Women’s Vault.

Answer: C) IBM Explanation: IBM has unveiled the world's smallest computer - a device no bigger than a grain of salt. Presented at the company's Think 2018 conference in Las Vegas, Nevada, the unit measures just 1mm by 1mm but has the same processing power as the x86 chip that ran early Nineties IBM desktop computers.

Answer: B) Bhutan Explanation:

Answer: B) Ola cabs Explanation: India's largest cab aggregator Ola has partnered with Bharti Airtel to launch a range of integrated digital offerings to customers.  As part of the partnership, Ola will integrate Airtel Payments bank to its app and Airtel will integrate Ola's mobile wallet Ola Money as a payment solution on Airtel website and MyAirtel app for mobile recharges and bill payments.

Answer: B) 7 Explanation: NASA announced a Seven new system of Exoplanets, which are Earth-size, and could potentially hold life.These exoplanets are located outside of our solar system and orbit a star. NASA has named the system of planets after the ‘Transiting Planets and Planetesimals Small Telescope,’ which is located in Chile. This telescope first discovered three of the planets in this system in May 2016. Unlike Earth, which rotates on its axis, the planets are “tidally locked to the star.” This means that one side of the planet has only day, and one side has only night. It also means the weather conditions are unlike what we experience on Earth.