Water pollution

 

What is water pollution?

Water pollution is when waste, chemicals, or other particles cause a body of water (i.e. rivers, oceans, lakes) to become harmful to the fish and animals that need the water to survive.

What causes water pollution?

(1) Natural causes:

• Volcanoes
• Algae blooms
• Animal waste
• Silt from storms and floods.

Air Pollution

What is air pollution?

Air pollution is when unwanted chemicals, gasses, and particles enter the air and the atmosphere causing harm to animals and damaging the natural cycles of the Earth.

What causes air pollution?

    Natural causes:

• Eruptions of volcanoes  
  
• Dust storms
  
• Forest Fires
  
  Human activities responsible for air pollution:
  
  

HSPT Vocabulary Set-1

Trigonomatry-2

Right angled triangle identity: In trigonometry, the most widely used triangle is Right Angled triangle. There are a number of formulas or identities related to right angled triangles, which we will learn about 'Pythagoras Theorem’ in this lesson. 

Division (Word problems)-1G5

This worksheet is based on division word problems for grade 5, check this out:

Division-WS1G5

This worksheet is based on dividing 3-digits numbers with 1-digit number for grade 5, check this page:

Least Common Multiple (LCM)- Lesson

LCM is the smallest factor which is common in the given numbers or the smallest common number which can be divided with all the given numbers completely. 

Example: LCM of 4 and 8 

8 is the least common multiple of 4 and 8