Explain how forests can be conserved using education, protected areas, quotas and replanting
Explain how forests can be conserved using education, protected areas, quotas and replanting
1 Answer
Questions and Answers For
O Level Biology
234 Questions
1 Answer Discuss reasons for conservation of species with reference to: (a) maintenance of biodiversity (b) reducing extinction (c) protecting vulnerable environments
Discuss reasons for conservation of species with reference to: (a) maintenance of biodiversity (b) reducing extinction (c) protecting vulnerable environments
1 Answer Describe the harmful effects of: (a) water pollution by untreated sewage and nitrogen-containing fertilisers leading to eutrophication, limited to: (i) increased availability of nitrate and other ions (ii) increased growth of producers (iii) increased decomposition after death of producers (iv) increased aerobic respiration by decomposers (v) reduction in dissolved oxygen (vi) death of organisms requiring dissolved oxygen in water (b) air pollution by greenhouse gases (carbon dioxide and methane), contributing to global warming and its likely effects (c) pollution due to insecticides and herbicides (d) non-biodegradable plastics in the environment, in both aquatic and terrestrial ecosystems
Describe the harmful effects of: (a) water pollution by untreated sewage and nitrogen-containing fertilisers leading to eutrophication, limited to: (i) increased availability of nitrate and other ions (ii) increased growth of producers (iii) increased decomposition after death of producers (iv) increased aerobic respiration by decomposers (v) reduction in dissolved oxygen (vi) death of organisms requiring … Read more
1 Answer Describe the impacts humans have through: (a) over-harvesting of plant and animal species (b) introducing a non-native species to an ecosystem
Describe the impacts humans have through: (a) over-harvesting of plant and animal species (b) introducing a non-native species to an ecosystem
1 Answer Outline the causes and describe the consequences of deforestation, limited to its effects on: biodiversity, extinction, loss of soil, flooding and concentration of carbon dioxide in the atmosphere
Outline the causes and describe the consequences of deforestation, limited to its effects on: biodiversity, extinction, loss of soil, flooding and concentration of carbon dioxide in the atmosphere
1 Answer Describe that the growth of the human population is increasing the demand for global resources
Describe that the growth of the human population is increasing the demand for global resources
1 Answer Identify and state the factors affecting the rate of population growth for a population of an organism, limited to: food supply, competition, predation and disease
Identify and state the factors affecting the rate of population growth for a population of an organism, limited to: food supply, competition, predation and disease
1 Answer Outline the role of fungi and bacteria in decomposition
Outline the role of fungi and bacteria in decomposition
1 Answer Explain why it is more energy efficient for humans to eat crop plants than to eat livestock that have been fed on crop plants
Explain why it is more energy efficient for humans to eat crop plants than to eat livestock that have been fed on crop plants
1 Answer Explain why food chains usually have fewer than five trophic levels
Explain why food chains usually have fewer than five trophic levels
1 Answer
Welcome to our Q&A page! Here, you can find answers to frequently asked questions about our courses, features, and other topics related to our content. If you have a question that's not covered, feel free to ask, and we'll be happy to help!
Quiz Leaderboard
1st
Debabrata
Score: 100%
Questions: 20
2nd
Debabrata
Score: 100%
Questions: 20
3rd
Debabrata
Score: 100%
Questions: 20
4th
Sourav
Score: 90%
Questions: 20
5th
Nischal
Score: 90%
Questions: 10
6th
Priyanka
Score: 90%
Questions: 10
7th
Martin
Score: 65%
Questions: 20
8th
Vesnce
Score: 45%
Questions: 20
9th
Hector
Score: 40%
Questions: 10
10th
Sabhyata
Score: 40%
Questions: 10
Top Questions
-
how to prepare polyacrylamide gel electrophoresis
Preparing a PAGE gel involves mixing acrylamide, bis-acrylamide, buffer solution,
Sourav Pan
-
how to interpret polyacrylamide gel electrophoresis results
Interpretation of PAGE results involves comparing sample bands to a
Sourav Pan
-
how does polyacrylamide gel electrophoresis differ from agarose gel
The primary difference between polyacrylamide and agarose gel electrophoresis lies
Sourav Pan
-
what is polyacrylamide gel electrophoresis used for
PAGE is used in molecular biology, biochemistry, and proteomics to
Sourav Pan
-
can you run polyacrylamide gel electrophoresis on ice
Yes, PAGE can be run on ice, and in some
Sourav Pan
-
how to read polyacrylamide gel electrophoresis results
To interpret PAGE results, researchers stain the gel with dyes
Sourav Pan
-
can two dimensional polyacrylamide gel electrophoresis determine 3d
Two-dimensional polyacrylamide gel electrophoresis (2D-PAGE) is used to separate proteins
Sourav Pan
- All Questions
BNO Team
