What are microscopic unicellular, prokaryotic organisms that move through the Earth doing both good and harm? a. Protists
b. Eubacteria
c. Fungi
d. Archaebacteria

How does the molecular clock work? a. it analyzes the brain functionality of two different species. b. it examines and compares the physical characteristics of two different species. c. it illustrates relationships between two different species. d. it compares the number of mutations that exist in the dna of two different species.

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

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?