Who was Rachel Carson?
Chemist
Teacher
Ecologist
Doctor
Weeds are removed by:
fungicides
Insecticides
Fertilizers
Herbicides
Effectiveness of DDT was discovered by:
Rachel Carson
Paul Muller
Charles Townsend
Richard Abegg
Pests are killed by :
Pesticides
Manure
Compost
Which of the following factors affects photosynthesis in plants?
Amount of light
Amount of oxygen
Amount of water vapor
Amount of weeds
How can rate of photosynthesis be increased?
By planting more weeds
By regulating the amount of light, temperature and carbon dioxide
By adding more fertilizers
By planting more trees
The amount of carbon dioxide in the air in a glass house can be increased by:
By pumping in extra carbon dioxide
By having blinds
By having ventilators
By adding more fertilizers to the soil
What is DDT?
Dichloro diphenyl trichloroethane
Dichloro diphenyl trichloromethane
Dichloro diphenyl dichloroethane
Dichloro diphenyl trichlorobutane
What are legumes?
Substance that kills fungi
Substance used to kill insects and pests
Substance used to remove weeds
The main crops that produce seeds for food
What is GM?
Genetic Modification
Garbage mover
Gaseous mixture
Grand matriarch
