What african animal was nearly made extinct by the demand for its body parts for european leisure products?
a. tiger
b. elephant
c. giraffe
d. lion

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

When proteins are being produced by a cell, scientist say that the genes are question 2 options: activated turned off replicated deactivated

Blood stem cells may develop into any kind of human blood cells. what kind of stem cells are blood stem cells? a. multipotent stem cells o b. totipotent stem cells o c. pluripotent stem cells o d. unipotent stem cells