How does the skin benefit a living organism A: it provides protection
B: Allows thermal energy to be passed out of the body
C: Aids in movement
D: responds to stimuli?

Which of the following statements is true? 1. the mantle of the earth is made of solid nickel and iron. 2. the crust of the earth is made of solid nickel and iron. 3. the inner core is made of solid nickel and iron.

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?

Kate is studying the transformation from unicellular to multicellular organisms. which metaphor is the most appropriate to apply to the map of the timeline.