What kind of stem cell can develop into any kind of of cells in the human body , but not cells of the placenta? a. pluripotent stem cells b. unipotent stem cells c. multipotent stem cells d. totipotent stem cells

Based on the topographic map of mt. st. helens, what is the contour interval of the volcano about height is 2,950 m?

Describe the impact of deforestation of both abiotic and biotic factors within the tropical rainforest.

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?