Do I need to prescribe the first line for each Google Adsense block?

Question

contextual advertising

Hello! Tell me please. For example, I have 4 blocks of Google Adsense ads on my site, and I noticed that all blocks start with this line:

<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

Do I need to leave it for each block, or can I just write it once, for example, in a header or footer?

Answer 1

If you are talking about this line:
then it suffices to indicate once, however,

<script>
    (adsbygoogle = window.adsbygoogle || []).push({});
</script>

must be called for each block

Answer 2

I put this script in the footer of the site and cut it out in the rest of the blocks.