Which of the following organisms do not have cell walls

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

Of the pollutants that form acids in the atmosphere, which is easiest to reduce? a. sulfur dioxide b. nitrogen dioxide c. ozone d. carbon monoxide

Awolf pack hunts,kills, and feeds on a moose. in this interactions, the moose is a?