What is the expected outcome of adding a catalyst to a chemical reaction?
a. the reaction will speed up.
b. chemical equilibrium will not be reached.
c. the reaction will slow down.
d. no change will occur.

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?