If a car's acceleration is negative, I'd say the car is slowing down.
The abdominal cavity is lined by peritoneum. It is a membrane that covers the inner layer of the cavity and also the organs inside. The membrane on the inner wall is parietal Thperitonium and the membrane that lines the organ is called visceral peritoneum. This helps in fixation and support of abdominal organs.
Roots and stems
Explanation: the cork of mature roots and woody stems is perforatedby nonsuberized pores called lenticels.
