Which bacterial structure and its function is a correct association?

Which two statements are true about a system? 1. a system is a group of objects analyzed as one unit. 2. energy that moves across system boundaries is conserved. 3. there’s only one way to define the boundaries of a system. 4. all systems are made by humans.

Find the number if 5% of it is 24% of 15.5.

Which of the following is a presentation cue? a. crossing your arms b. mumbling c. repeating words d. whistling