Skip to content
MathsGenie logo
Open app

Course home

  1. GCSE
  2. Biology Edexcel
  3. Question bank

Material cycles and decomposition

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162
Question 16

A gardener placed 4.5 kg of fresh grass clippings into a compost heap. After 30 days30\text{ days}30 days, the gardener reweighed the grass clippings and found that the mass had decreased to 3.6 kg. Calculate the rate of decomposition of the grass clippings in kg/day\text{kg/day}kg/day. Use the equation:

rate of decomposition=change in masstime taken \text{rate of decomposition} = \frac{\text{change in mass}}{\text{time taken}} rate of decomposition=time takenchange in mass​
[3]

Material cycles and decomposition Questions

  1. GCSE
  2. /Biology
  3. /Material cycles and decomposition