Question
Why was an expansion in plant life observed under warm
temperature? Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.  Global temperature rises could cause the marine food web to collapse, devastating the livelihoods of tens of millions of people who rely on fisheries for food and income, scientists have warned. Warming oceans restrict vital energy flows between different species in the marine ecosystem, reducing the amount of food available for bigger animals - mostly fish - at the top of the marine food web, according to a study in the journal PLOS Biology. This could have “serious implications” for fish stocks, said Ivan Nagelkerken, a professor at University of Adelaide. The Adelaide scientists set up 12 large tanks, each holding 1,800 litres of water, in a temperature-controlled room to replicate complex marine food webs, and tested the effects of ocean acidification and warming over six months. Plant productivity increased under warmer temperatures but this was mainly due to an expansion of bacteria which fish do not eat, Prof. Nagelkerken said.Solution
The correct answer is D
The mid latitude zones lie between latitudes in the northern and southern hemispheres:
If * is an operation such that a * b = 3a – 4b. find the value of 3*4
A cone is formed by rotating an equilateral triangle about its altitude. Fill in the blank.
Equilateral triangle : Cone = Square: ____
Match List I with List II
Choose the correct answer fr...
In a row of 35 student, Ramesh is 24th from starting. Two student from last went away. What is the position of Ramesh from last row?
Select the odd one out from Iron, copper, bronze, silver.
One TB (Tera Byte) approximately occupies or comprises which of the following data or space size
25% of 12% is same as
Consider the following statements :
1.     Fa Xian took the land route back to China through the north-west and Central Asia and carried b...
A company pays a dividend of 10% for the first year, 15% for the second year and 25% for the third year. If the investment was of Rs 3000/- the total di...
Relevant for Exams:
