hi, good day every one the sentence : the notes totally engrossed him. the word engross, does it mean capture his attention, or hold his attention?

hi, everyone would you help me with a question : what does all-patrol obs mean?

hi, good day, everyone, could you help me out here?  Do the sentences A is N times as great as B and A is N times  greater  than  B. mean the same?

hi, good day, everyone, could you do me a favor? Do the phrases take the responsibility and  take on  the responsibility  mean the same?

hi, everyone, good day

could you help me?

what does this sentence mean? 

Scientists also preoject that increasing cool-weather rain and snow in the winter habitat for eastern migratory North Amnterican monarch butterflies will become inadequate for the species' survival.

I'm not sure what will become inadequate.

thank you in advance.