Compare and contrast the 2 major groups of cells: prokaryotes and eukaryotes

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping

Collin would like to use the data a coworker has entered in a database. the problem is the coworker's database software is different from collin's. collin should