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The albedo of the earth's surface is only about 4%, yet the combined albedo of the earth and the atmosphere is about 30%. Which set of conditions below best explains why this is so?
Consider the following statements:
1. The albedo of an object determines its visual brightness when viewed with reflected light.
2. The albedo of Mercury is much greater than the albedo of the Earth.
Which of the statements given above is/are correct?
Which of the following statements are true about water available on earth? A. Only about three percent of total water in earth is fresh water B. Oceans possess 90 percent of the total water on earth C. Water on earth is created fresh from atmosphere D. Glaciers, rivers, springs and ponds are sources of fresh water Choose the correct option.
The phases of the moon as we see from the Earth are due to changing relative positions of the sun, the earth and the moon. Which of the following statements is true. A. on a full moon day, the earth comes between the sun and the moon B. on a new moon day, the moon is in between the earth and the sun C. on a full moon day, the moon is in between the earth and the sun D. on a new moon day, the earth is between the sun and the moon? E. on a new moon day, the sun is between the moon and the earth
The moon looks blood red during a total lunar eclipse because some of the sunlight passes through Earth’s atmosphere to reach the moon. As the white light breaks up while passing through the atmosphere, most of its blue-colored wavelengths are absorbed and scattered. The remaining red wavelengths light up the moon in blood-red color. Which of the following statements do not support the assertion of the above-given statement? I: The moon looks blood red during a total lunar eclipse as the white light breaks up due to the Earth's atmosphere where most of its red-colored wavelengths are absorbed. II: The moon looks blood red during a total lunar eclipse as the earth blocks the white light to travel to the moon.
The acceleration of the moon towards the earth is approximately 0.0027 m/s2. The moon revolves around the earth once approximately every 24 hours. What would be the acceleration due to gravity of the earth of the moon towards the earth if it were to revolve once every 12 hours?
Rekha, Hema and Kajal bought the same washing machine at the same MRP from 3 different dealers. All the dealers offered 2 discounts and subsequent cash backs after discount. Rekha got discounts of 5 percent and cashback of 20 percent, Hema got 16 percent discount and cashback of 15 percent, Kajal got 15 percent discount and cashback of 12 percent. Find out who purchased the machine at maximum price? 
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. In the last two decades, the world's gross domestic product (GDP) has increased by 50 percent, whereas inclusive wealth has increased by a mere 3 percent. In recent decades, GDP-driven economic performance has only harmed inclusive wealth like human capital; and natural capital like forests, land and water. While the world's human capital which stands at 57 percent of total inclusive wealth grew by only 8 percent, the natural capital which is 23 percent of total inclusive wealth declined by 30 percent worldwide in the last two decades. Which of the following is the most crucial inference from the above passage?
In a shipment of 120 machine parts 5 percent , 5 percent were defective , In a shipment of 80 machine parts , 10 percent were defective. For the two shipments combined , what percent of the machine parts were defective ?
A, B, C, D and E start a partnership firm. Capital contributed by A is three times that contributed by D. E contributes half of A’s contribution, B contributes one third of E’s contribution and C contributes two third of A’s contribution. If the difference between the combined shares of A, D and E and the combined shares of B and C in the total profit of the firm is Rs. 13500, what is the combined share of B, C and E? (The shares are supposed to be proportional to the contributions)