Grade 11 Scientists in Training Revision

Define the following:

i. Pollution

ii. Pollutant

i. List 3 types of pollutants

ii. Name 2 types of fossil fuels

i. Explain what is meant by the term Global Warming.

ii. What is the main cause of global warming.

iii. What are 2 effects of global warming

Decribe the Process of Eutrophication

Give the WORD equation for Respiration

Give 2 Differences between anaerobic respiration & aerobic respiration

What are 2 difference between Subsistence farming and Commercial Farming

Which feature makes the alveoli efficient for gaseous exchange?

• Colour

• Shape

• Large volume

• Large surface area

Which gas is represented by letter Q?

• Oxygen

• Nitrogen

• Carbon Dioxide

• Water Vapour

What gas does the following represent?

A.

B