The scales of female pine cones produce a sticky substance. what function might this serve?

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

What is responsible for the uneven heating between the poles and the equator on any given day

In general, are there any major differences that you can see? explain