What aspect of mid-ocean ridges provides the mechanism that allows plate tectonics to occur?
a old rock is melted into magma.
b choice 2 (correct answer) new rock is formed from magma.
c seamounts are shaped.
d trenches are destroyed.

What was carolus linnaeus' classification system of organisms based on? a.physical characteristics of organisms b.food habits of organisms c.habitat of organisms d.size of organisms

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.

Explain the source of radioactivity in uranium in earth’s crust by which it produces nuclear radiation