Hydrogenous sediment is made up of. . . a. cinders and rock from undersea volcanoes. . b. parts of once-living organisms. . c. eroded continental rock. . d. minerals that crystallize directly from ocean waters.

Needed fast 15 points the process of natural selection favors certain characteristics in organisms, while it selects against other characteristics. what would happen if there was zero variation between all of the organisms on earth? a.organisms would evolve to increase variety b.natural selection would operate faster c.less food would be available d.evolution through natural selection would not occur

Which of the following is an example of an outdated theory based on the consensus of the scientific community ? a. big bangb. geocentric solar systemc. heliocentric theoryd. plate tectonics answer : geocentric solar system

What is the main source of phosphorus?