Which of these is an example of nonpoint-source pollution? A. A textile factory
B. A city's traffic
C. An oil refinery
O D. A car repair shop

What is the function of nucleic acids

Match each description to the appropriate biome. tropical savanna desert tropical rain forest taiga tundra has sparse vegetation and very cold temperatures located near the equator and contains trees that form dense canopy layers is very hot and dry, and has plants that need little water has cold winters, heavy snowfall and is dominated by conifers has warm temperatures and is dominated by grasses

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic