Form a hypothesis about what substance or substances are produced in palisade cells but not in xylem cells

Consider the skeleton. which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

Round seeds and yellow seed color are dominant to wrinkled seeds and green seed color. which punnett square represents the correct way to set up the cross rryy  ´  rryy? 

Explain how organisms could be harmed by high levels of salt from roadways?