Aplate of the steel hull of a ship develops a large crack when the ship strikes a reef. analysis of the steel’s composition shows higher-than-normal levels of an element that could explain why the plate cracked instead of bending.

which element is most likely suspected?
ironsulfurchromiumnickel

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

Is this correct if not can u correct me

Ascientist wants to know how individual lions within a pride interact with each other in their own environment. to do this, the scientist sedates and tags all of the lions within a pride. then, he places several remotely-controlled video cameras near the lions' den and performs an observational field study. he collects continuous video footage over the span of one year, analyzes the video, and then forms conclusions based on his observations.