keyword

carbon dioxide humans

Monthly search volume and cost-per-click data for "carbon dioxide humans" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=carbon+dioxide+humans&country=us" +--------------+------------------+ | volume | 90 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-17 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
what is co2	22,200	$0.18	11/20
where does carbon dioxide come from	1,900	$0	12/20
where does the carbon dioxide come from	1,900	$0	12/20
co2 atmosphere percentage	1,900	$6.14	11/20
carbon dioxide co2	1,600	$1.49	12/20
co2 atmosphere	1,600	$9.64	11/20
carbon dioxide human	90	$0	16/20
carbon dioxide from humans	90	$0	14/20
human carbon dioxide	90	$0	14/20
carbon dioxide and humans	90	$0	13/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=carbon+dioxide+humans&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt