Answer:
In meteorology, convection is the transfer of heat and other atmospheric properties by the movement of masses of air, particularly in an upward direction. In geology, it is the slow movement of material below the Earth's crust. Some convection is manmade.
The correct answer is A. chemical fertilizers and pesticides.
Organic farming is a method of farming in which crops are cultivated in such a way to keep the soil alive and in good health by using organic waste of crop, animal and farm waste and aquatic waste. Other biological materials such as beneficial microbes are added to the crop field which release nutrients to the crops. Use of chemical fertilizers and pesticides should be limited as these are non-biodegradable and cause harm to the ecosystem and soil.
Answer:
A. Higher standard of living for most people
The Green Revolution brought massive improvements in agriculture, which led to a great increase in food production that benefited most people around the world.
C. Pollution from fertilizers
The higher yields and output brought by the Green Revolution were facilitated by the extensive use of fertilizers in lands that are not as fertile/suitable for agriculture. This extensive use has also brought a new series of environmental problems.
D. Animal antibiotics and growth hormones
The Green Revolution was also manifested in the field of animal husbandry. In this field, antibiotics and growth hormones became commonplace for the same reason that fertilizers became commonplace in vegetable crops: increase output and productivity.
Bolivia, Paraguay, Zambia ?
Answer:
B. Karst regions and carbonate rock outcrops occur on every continent except Antarctica.
Explanation:
Karst is an area made up of limestone. Antarctica's geology make its more complicated for this outcrops occurance, there are several karst regions all over the world such as:
Ankarana Reserve, Madagascar (Africa)
South China Karst, World Heritage Site (Asia)
South Harz and Kyffhaeuser Gypsum Karst, Germany (Europe)
Illinois Caverns State Natural Area and Illinois Sinkhole Plain in Monroe County (North America)
Los Haitises National Park, Dominican Republic (Central America)
The Sierra de San Luis in Falcón State, Venezuela (South America)
Jenolan Caves, New South Wales (Oceania)
