What is the national animal of paraguay?

During which era in earth's history were the first insects? mesozoic precambrian cenozoic paleozoic

The oldest seafloor in the atlantic ocean is located closest to the edge of the continents. explain how this age can be used to figure out when north america first began to separate from europe

Which of the following situations is most likely to arise when a crowded city is unable to provide its residents with sufficient sanitation?