Separation technique for sucrose and sugercane

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u.s. and mexico. the st. lawrence seaway provides an important trading route for the u.s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Which zone within the open-ocean zone is home to the most organisms? deep zone surface zone intertidal zone transition zone

Which of your fossils are most likely heterotrophs? which of them are autotrophs? how do you know?