What are the two main Earth systems?

Could someone me with number one you

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

What is the function of the root cap? a. extra-absorbent cells in the root cap absorb more water and nutrients b. protect the meristematic area of the stem c. contains sensors for sunlight d. increases surface area of the root