1) What's pollution? a) Is the contamination of water, making it unusable for drinking. b) The introduction of harmful materials into the environment c) A strategy to help the planet heart 2) Water pollution can be defined as: a) the contamination of sources by substances which make the water unusable for drinking, cooking, cleaning, swimming, and other activities. b) Means anything that surrounds us. It can be living (biotic) or non-living (abiotic) things. c) Gas that you can find in the atmosphere. 3) Global warming  a) The way in which heat is trapped close to Earth's surface by “greenhouse gases. b) Is the long-term heating of Earth's surface observed since the pre-industrial period (between 1850 and 1900) c) Problems that cause contamination in the Atmosphere.  4) Recycling is an activity that... a) Helps people to understand climate changes. b) Is the process of converting waste materials into new m c) Prevention of wasteful use of a resource. 5) Deforestation can be defined as a) The trees provide us with oxygen, and several raw materials and also maintain the temperature of the earth. b) Is the presence in or introduction into the environment of a substance which has harmful or poisonous effects. c) Is the depletion of trees and forests at an alarming rate. 6) It's a great concern in today’s scenario. This problem has surfaced in the last few decades. a) Climate Change b) Pollution c) Global Warming

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