Green Revolution (i)

What is the "Green Revolution"?

• Increasing crop yields drastically using technology

• Increasing green spaces in the city

• Ensuring technology used reduces global warming

Which of the followings were used to in Green Revolution? Pick all correct options.

• High Yielding Varieties (HYVs)

• Using a lot more labour

• Using machines to reduce labour

• Using chemical fertilisers, pesticides, and herbicides.

• Using irrigation

High Yielding Varieties (HYVs) creates more yield because...

(Select all correct options)

• It produces more grain per stalk.

• It is taller, so less likely to break and get damaged.

• It is shorter, so less likely to break and get damaged.

• It is more pest-resistant.

• It is less pest-resistant.

Irrigation is...

• ...artificially applying water onto crops, especially water rom other places.

• ...depending on rain to water the crops in a farm.

Irrigation can improve crop yield because...

(Select all correct options)

• It drains water from farms that has too much water.

• It ensures that crops can grow despite insufficient rain.

• It allows farms to do multi-cropping (Grow crops multiple times in a year) as it is no longer restricted by rain.

• It increases the amount of rain the farm receives.

Salinisation is a process where...

• Soil accumulates too much salts and becomes saline.

• Soil accumulates too much water.

• Soil accumulates too much chemical.

Salinisation is a....

• ...good thing because it gives the crops more salts and minerals to grow!

• ... a bad thing as too much salt in the soil makes it impossible for crops to grow. So the farm gets destroyed.

How did Green Revolution lead to salinisation?

• Using too much chemical fertilisers, leading to salt crystals accumulating in the soil.

• Using too much chemical pesticides, leading to salt crystals accumulating in the soil.

• Using irrigated water which often contains minerals and salts. After these water are applied onto crops, it dries, leaving salt crystals behind in the soil. With repeated irrigation, salt crystals accumulate in the soil.

Eutrophication is a process in which...

• ...you throw fig at vacations. (geddit geddit)

• ...water bodies (such as lakes) lacks oxygen due to too much algae growing in it.

Eutrophication is...

• ...a good things as there are more algae for humans to eat.

• ...a bad thing as the water bodies cannot support life due to a lack of oxygen.