12. Which of the following is a result of sea floor spreading?

A) Trenches form at divergent boundaries.

B) Mid-ocean ridges form at divergent plate boundaries.

C)Trenches form at transform
boundaries.

D) Mid-ocean ridges form at convergent boundaries.

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

Explain the significance of thesaurus geographicus

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?