SB4i Fertilisers and Biological Control

Question 1

biological control? 3

Answer 1

~using organisms to control pests
~increases crop yield
~can also control weeds

Question 2

fertilisers?

Answer 2

increase growth and yield of crop plants

Question 3

disadvantages of using fertilisers?

Answer 3

~some fertilisers may wash into nearby water systems
~leads to pollution - killing organisms in the water
~can also make humans if ingested