The diagram shows part of the lining of the human trache Х
ههه
What is the function of cell X?
A
B
gaseous exchange
mucus removal
phagocytosis
secretion of mucus
с
D

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

hammurabi rulers

good lesson

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.