A family of Microsoft word processing software products for creating web, email, and print documents.
If what you see is the bottom of the picture, the usual reason is that it's in a paragraph whose line spacing is set to an "Exactly" value.
Right-click the paragraph and choose Paragraph in the menu. Change the line spacing dropdown from Exactly to At Least.
Images that move around are usually set to one of the "floating" text wrapping types. To stabilize them, either change the wrapping to In Line with Text or put them into table cells (and turn off the table borders).