Which fossils occurs on the most landmasses

The large ground finch obtains food by cracking seeds. what is its short, strong beak an example? a) tendency toward perfection b) adaptation of a species over time c) selective use and disuse of an organ over time d) scarcity of recourses

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

What is the next step in muscle contraction after the actin changes shape