Sometimes water contains some unwanted substances which is not suitable for drinking. This type of …
Energy – The capacity to do work is known as energy. It is a conserved quantity. …
1-A single bacterium in the soil interacts with (A) The water (B) Air (C) Particles …
1-Global warming is also referred to as (A) Climate change (B) Ecological change (C) Atmosphere …
1-Acid Rain is caused by emissions of (A) Sulphur dioxide (B) Nitrogen oxide (C) Both …
1-Noise is (A) an unwanted noise (B) an irritant (C) a source of stress (D) …
1-Waste is any material that is not needed by the (A) owner (B) producer (C) …
1-The hydrosphere is the mass of water found (A) on the earth (B) found under …
1-The Ozone hole is a much larger springtime decrease in _ ozone around Erath’s polar …