QUICK PLEASE HELP!! *** EARTH SCIENCE *

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.

Talking listening and reacting non verbally are all part of communicating

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z