HELP ME PLEASE The high number of children who are orphaned or abandoned in China can be largely attributed to

China's press censorship
One-child policy
Negative population growth

Answer (datum point);

Environmental factors

Genetically modified corn is a very controversial issue because of the potential benefits that it can bring, but also the potential for it to bring problems in the future. genetically modified corn can be beneficial in the developing world because it can be modified to be resistant to drought, or pesticide, and therefore the crop is stronger and easier to grow. however, the use of gmo corn can also be problematic because they decrease the diversity in the types of seeds that are used to grow food and also can make farmers dependent on the seeds from companies because they can only be used once to grow corn. 

Guiana highlands  is the part of venezuela that is largely known to be unexplored.

so, the answer is  option c. guiana highlands.
happy studying! ^_^