-use of lead free petrol in motor vehicles, air craft, aeroplanes and petroleum engines
- uses of smokeless fuels and electricity
- filtration, dissolution and use of chemicals to remove harmful gases
- factories should be erected far away from residential areas
- use of tall chimneys
- reduce volume or intensity of sound e.g. by use of ear muffs
- concords should fly at higher altitudes and aeroplanes to fly high up
ericmunguti answered the question on October 5, 2018 at 07:29
- Explain the various human activities that have caused pollution.
(Solved)
Explain the various human activities that have caused pollution.
Date posted: October 5, 2018. Answers (1)
- Describe how energy flows from the sun through the various trophic levels in an ecosystem.(Solved)
Describe how energy flows from the sun through the various trophic levels in an ecosystem.
Date posted: October 5, 2018. Answers (1)
- What is nitrogen cycle?(Solved)
What is nitrogen cycle?
Date posted: October 5, 2018. Answers (1)
- Discuss how competition affect living organisms.(Solved)
Discuss how competition affect living organisms.
Date posted: October 5, 2018. Answers (1)
- Give examples of biotic factors affecting ecosystems(Solved)
Give examples of biotic factors affecting ecosystems
Date posted: October 5, 2018. Answers (1)
- Explain how the following abiotic factors affect living organisms (i)Wind (ii)Temperature (iii)Light (iv)Humidity(Solved)
Explain how the following abiotic factors affect living organisms
(i)Wind
(ii)Temperature
(iii)Light
(iv)Humidity
Date posted: October 5, 2018. Answers (1)
- What are abiotic factors?(Solved)
What are abiotic factors?
Date posted: October 5, 2018. Answers (1)
- Define the following ecological terms
(i)Ecology
(II)Habitat
(iii)Ecological niche
(iv)population
(v)Community
(vi)Ecosystem(Solved)
Define the following ecological terms
(i)Ecology
(II)Habitat
(iii)Ecological niche
(iv)population
(v)Community
(vi)Ecosystem
Date posted: October 5, 2018. Answers (1)
- State the necessity of using a dichotomous key .(Solved)
State the necessity of using a dichotomous key .
Date posted: October 5, 2018. Answers (1)
- What is a dichotomous key?(Solved)
What is a dichotomous key?
Date posted: October 5, 2018. Answers (1)
- State the general characteristics of chordate.(Solved)
State the general characteristics of chordate.
Date posted: October 5, 2018. Answers (1)
- State the harmful effects of insects(Solved)
State the harmful effects of insects.
Date posted: October 5, 2018. Answers (1)
- State the economic importance of insects(Solved)
State the economic importance of insects
Date posted: October 5, 2018. Answers (1)
- Name the classes and state characteristics of angiospermae .(Solved)
Name the classes and state characteristics of angiospermae .
Date posted: October 5, 2018. Answers (1)
- Name sub-divisions of spermatophyte and state the characteristics of each class(Solved)
Name sub-divisions of spermatophyte and state the characteristics of each class
Date posted: October 5, 2018. Answers (1)
- State the main characteristics of the following divisions of kingdom plantae (i) Bryophyte (ii) Pteridophyta (iii) Spermatophyte(Solved)
State the main characteristics of the following divisions of kingdom plantae (i) Bryophyte (ii) Pteridophyta (iii) Spermatophyte
Date posted: October 5, 2018. Answers (1)
- Describe the five stages of mitosis(Solved)
Describe the five stages of mitosis
Date posted: October 5, 2018. Answers (1)
- Draw a simplified diagram representing the nitrogen cycle(Solved)
Draw a simplified diagram representing the nitrogen cycle
Date posted: October 5, 2018. Answers (1)
- What is the importance of magnesium in the body .(Solved)
What is the importance of magnesium in the body .
Date posted: October 1, 2018. Answers (1)
- What are Macro-nutrients .(Solved)
What are Macro-nutrients .
Date posted: October 1, 2018. Answers (1)