In order for organisms to survive in their environment, an ecosystem must provide the organism with all of the following except A. edible food.
B. drinkable water.
C. adequate shelter and space.
D. sedimentary rocks.

D. sedimentary rocks.

Explanation:

organisms rely on their environment to provide edible food, drinkable water, and adequate shelter and space. sedimentary rocks are no where in the line of must-haves for them to live.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.