Why do scientists suspect more than 2 million Americans suffer from mitochondrial disorders?

Fossils of ancestors of the modern horses show a small 4-toed almost dog-like browsing animal named eohippus over time the horses got larger lost toes and changed to a grazing diet what is the best explanation of why this change occurred

What characteristic of radioactive decay makes it useful for determining the absolute age of samples? question 10 options: occurs at a constant rate changes based on temperature speeds up under high pressure slows down in very dense samples

Aline graph has a vertical axis labeled "average plant mass (g)" and a horizontal axis labeled "concentration of ammonium nitrate (mg/l)." what information is conveyed by a point plotted with coordinates (10,40)? keep in mind coordinates are written as (x coordinate, y coordinate).