In 1991, Mt. Pinatubo in the Philippines erupted. The accompanying photo shows the ash and debris that the volcano propelled high into the atmosphere. What meteorological impact could these aerosols have on the global weather and climate?Select all that apply. a. The ash and smoke would cause the atmosphere to dry out b. Global temperatures could increase c. Global temperatures could decrease d. The ash and smoke could lead to an increase in clouds and fog.

The earth consists of a variety of different organisms. despite their diversity, however, some similarities on the structural and metabolic levels may be seen. these similarities can be attributed to a. similarities among organisms in their proteins and nucleic acids. b. the ability of organisms to readily adapt to sudden environmental changes. c. similarities in organisms' habitats and niches. d. the ability of all organisms to interbreed and produce new species.

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries