how can i take out the section breaks in word document

You can also delete all section breaks from a document by searching for ^b and replacing with nothing.

By default, headers/footers are linked between sections, so you should get the same content, unless you explicitly turned off the "linkage" for one or more header (or footer) types.

If you activate the header/footer area, you can see the type of header (or footer) and you can tell if it linked to its "neighbor" in the preceding section or not. Below, the screen shot illustrates, with the "Same as Previous" label, that the header is indeed linked to the header in the preceding section.

You can delete section breaks, but section formatting (such as header/footer content, page margins, page orientation, etc.) will be lost in the process. Often, header and footer content must be recreated if you delete a section break.

To delete a section break, do the following: Display nonprinting characters by clicking the ¶ icon on the Home tab. Switch to Draft view so that you can more easily see all the breaks. Click next to a break and press Delete on your keyboard. Sometimes you have to press more than once (especially in a case such as below when the break is preceded by a paragraph mark, ¶).

That would be more efficient, of course. Thanks.