5. What are THREE (3) functions of the skeletal system?

If animal agriculture was eliminated, how much grain would become available for human consumption?

The relationship between intron and exon

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?