Questions

llanos is a tropical grassland while the remaining three are temperature grasslands

In 1985 the physicist Wilhelm Rontgen discovered X-rays, the "X" signifying their unknown origin.He later found that the rays could pass through flesh and by using photographic plates could make images of bones inside the body. 

All the three statements lead to either increase in demand of goods and services or decrease in the supply. This leads to increase in general level of prices.

Online campaigns are highly measurable and may be able to generate an automatic positive ROI. As long as ROI remains positive, it can be strategic to capture all traffic without a predetermined budget.

The Republic was written by Plato.