Imagine that you could dive deep into the Atlantic Ocean where the South American Plate and African Plate meet at a plate boundary.
Make a prediction: What do you think you would see at the plate boundary? Would you see the mantle? Why or why not?

Which term refers to the total dollar value of the goods and services produced in a country in a year?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.