Which of the following is not a primary pollutant?

Smoke from a wild fire caused by lightening

Freon (a CFC) from an old refrigerator

Sulfur dioxide from iron are melting

Large amounts concrete dust from a construction site

How are the high islands of the pacific formed? a. by connected coral reefs called atolls b. by lagoons c. by moving glaciers d. by underwater volcanoes

What was one effect of european influence on southeast asia?

Study the image. which feature is modeled in the diagram? check all that apply. 1 a convergent boundary is formed. 2 continental plates are colliding. 3 two plates are forming a divergent boundary. 4 continental plates are sliding past each other. 5 several mid-ocean ridges are formed on earth’s surface.