Answer:
Grassroots attack means attacking a problem at a grass root level in order to over power it.
Bilharzia a parasitic disease that affected 250 million people in the Third World countries. Mike Muller an African researcher ,a freelance journalist specialised in Third World countries affairs.
He made amazing progress in using a pesticide from an indigenous plant to combat bilharzia a parasitic disease that affected 250 million people in the Third World Countries.
Step-by-step explanation:
The passage is about combating Bilharzia.
This passage is presented by Mike Muller.
An African Researcher has used a pesticide to combat Bilharzia.
Bilharzia is a parasitic disease.
It afflicts 250 Million people.
A progress has been made by using a pesticide from an indigenous plant.
Over the past five years, experiments are being carried on Ethiopia.
These experiments made an encouraging progress in the fight against a disease that ravages three continents.