Biofules And Food Production

Question 1

An increase in the Earth’s temperature of only a few degrees Celsius:

Answer 1

May cause big changes in the Earth’s climate
May cause a rise in sea level
May reduce biodiversity may cause changes in migration patterns, e.g. in birds
May result in changes in the distribution of species

Question 2

What is an important factor in removing carbon dioxide from the environment?

Answer 2

Carbon dioxides can be sequestered in oceans, lakes and ponds

Question 3

How can biofuels be made?

Answer 3

It can be made from natural products by fermentation. Biogas, mainly methane, can b produced by anaerobic fermentation of wide range of plant products or waste material containing carbohydrates

Question 4

How can the efficiency of food production be in proved and why?

Answer 4

By reducing the number of stages in the food chain, this is because at each stage in a food stage, less material and less energy are contained in the biomass of the organisms

Question 5

Other than reducing the number do stages in the food stage, how can you improve the efficiency of food production

Answer 5

By restricting energy loss from food animals by limiting their movement and by controlling the temperature of their surroundings

Question 6

Give an example of sustainable food production

Answer 6

Fish stocks in huge oceans and declining. It is important to maintain fish stocks at a level where breeding continues or certain species may disappear altogether in some areas. Net size and fishing quotes play an important role in conservation of fish stocks

Question 7

Why is fungus Fusarium useful?

Answer 7

It is useful in producing mycoprotein, a protein-rich food sustainable for vegetarians. The fungus is grown on glucose syrup, in aerobic conditions, and the biomass is harvested and purified

Question 8

Levels of carbon dioxide and methane in the air has ….. And contributed to …..

Answer 8

Increased

Global warming