2. A hot water tank contains 160kg of cold water at 20 degrees celsius. Calculate the quantity of heat energy required to raise the temperature of water to 60 degrees celsius. [4marks]​

Hello,your answer would be iron! plz mark me brainliest! hope this !

The correct answer would be d. because when a volcanoe erupts it cobers the sun with thick ashes and blocks sunlight so there would beba big decrease in solar energy

When calculating percentage we need two numbers. one number represents total amount of certain thing and another number represents partial number of that thing. then we divide those two numbers.in this problem total amount represents total number of weeds growing on some surface. partial number represents chicory.percentage = partial / total * 100%percentage = 29 / 98 * 100%percentage = 29.6%our calculation is closest to answer b) so this is our correct answer.