Biology

• Eat less


  Fat, oil, sugar, salt
• Eat moderately


  Dairy products, meat, fish, eggs and beans
• Eat more


  Fruit and vegetables, cereals and whole grains
• Drink


  1. 8 glasses of fluid (including water, weak tea and milk) per day
• Cereals and whole grains provide carbohydrates
• Eating more fruit and vegetables helps prevent deficiency diseases like scurvy and rickets
• Eating too much fat and oil can lead to obesity
• Different cells


  • Have different functions
• Newly discovered species


  Leothro barbarabrownae
• Leothro barbarabrownae is a reptile
• Investigating photosynthesis


  1. Measure distance of lamp from plant

  2. Measure number of bubbles produced
• As distance of lamp from plant increases


  Number of bubbles produced decreases
• Different pigeons have different colours and tail structures
• Racing pigeons


  • Specially bred for speed
  • Have strong wings
• Soil types


  • Soil A
  • Soil B
  • Soil C
• Decomposers


  Microorganisms that help decay leaves
• Leaves in soil C decay faster than those in soil B due to differences in pH and water content
• Symbols


  • 3.7
  • 4.035
  • 7.6
  • 3.65
  • 4.34
  • 7.60
• Draw a ring around the value of the digit 4 in the number 6.354

  6.354
• Solve


  • 10
  • 49
  • 4
  • 4
  • 100
  • 1000
  • 10000
• Solve 5x2-36x+4


  5x2-36x+4
• Solve Su-2=3a+12


  Su-2=3a+12
• Solve 5x-3x=12+2


  5x-3x=12+2
• A square has a side length of xem
• Find an expression for the area of the square

  A= Length x length
• A circle has a radius of 8.7 cm
• Find the area of the circle

  A=πr2
• Naomi receives less than half of the apples
• Possible value of the ratio of Naomi's share to Samira's share

  • 1:5
  • 3:2
  • 1:1
• Rational numbers


  • 191
  • √19
  • 19
• Irrational numbers


  • 96
  • 1
• The diagram shows two parallel lines and two transversals
• All the angles that must be equal to 70°
• Scatter diagram A


  Strong positive correlation
• Scatter diagram B


  Weak positive correlation
• Scatter diagram C


  No correlation
• The balls in bag A are numbered 1, 3, 5 and 6
• The balls in bag B are numbered 2, 3, 4 and 6
• Show that the total score is even if the total score is more than 8

  The possible totals are 18 or 12, both of which are even
• Find the sum of the interior angles of a 7-sided polygon

  180(7-2)=900°