Which of the following species is an r-selected species

What is the number of phosphates in an atp molecule

Organize the following objects from lowest volume to highest volume

Which statements explains what the fossil records indicates? check all that apply. a) earth is 4.5 billion years old b) many organisms have become extinct c) mammals have always existed on earth d) mass extinctions have occurred several times on earth e) the amount of water on earth has decreased over time?