When Pangaea broke up, the northern continents of North America and Eurasia became separated from the southern continents of Antarctica, India, South America, Australia and Africa. The large northern continent is called Laurasia and the southern continent is called Gondwanaland.
It is harmful because motor vehicles spit out gas and like fumes. That can lead to pollution in the air.
It is beneficial because it helps people get to places they need to get to quicker
In the question in regard to the ouchterlony test if there is an unknown antigen containing a swine serum album, the number of precipitin line that will form is one which is the answer. It relies in between the wells of the antibodies for the bovine albumin and the wells of the bovine albumin.
Answer:
just search up what each one means lol
