Answer:
c. Lack of food sources
Explanation:
The groundwater has been used more and more around the world. There are large reserves of it, but in the past few decades the groundwater reserves have constantly been going down. The main reason for this is the lack of food sources. Because the global population is constantly on the rise, more and more food is needed, and in order to produce it, more and more farmlands are created. The increased number of farmlands means that more water is needed for irrigation, thus the groundwater reserves are the ones that suffer the most.
Answer:
Insecticide-treated nets are the cornerstone of malaria prevention efforts in Africa. The report found that more than 53% of the population at risk in sub-Saharan Africa slept under a treated net in 2015, compared to 30% in 2010. Last month, who released the findings of a major 5-year evaluation in 5 countries
Explanation:
Green revolution means where high yielding variety of seeds were introduced.
Explanation:
Green revolution took place during 1960s. Its main aim was to increase the production.
Green revolution increased the agricultural output. The energy that was introduced to produce the crops has increased . So the ratio between crop production and energy needed has decreased.
During green revolution Government adopted an approach to import and distribute high yielding varieties of crops such as wheat and rice .
There was an uneven distribution between the small and large farmers. There was lack of information and resources available among small farmers . They were not aware regarding the technology as well.
Various problems were faced during green revolution that is soil erosion, degradation of soil fertility,global warming, erosion of water resources.
Answer:
A number of forces continue to seriously affect our natural water resources. Many of these are primarily the result of human actions and include ecosystem and landscape changes, sedimentation, pollution, over-abstraction and climate change.
Explanation:
hope this kinda helps
Answer:
Concentrated in the south
Explanation:
More than 75% of the Canadian population lives in urban centers, and all cities with more than 200,000 inhabitants are no more than 50 km from the United States border. The coastal zones of the Atlantic provinces, east of Quebec and the Saint John's river valley, have the highest population density.