During an early phase of the planet's existence, earth's atmosphere was similar in composition to the atmospheres of mars and venus. at that time earth's principal atmospheric gas was: a. nitrogenb. carbon dioxidec. oxygend. water vapore. argon

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

Chalk is an ionic compound. which is a property of all ionic compounds that makes chalkboard? particularly useful for writing on a a high melting point hardness and brittleness inability to dissolve in water a multicolored appearance

Researchers want to use edna to look for an invasive species in the water which of the steps would be likely do last