keyword

human carbon dioxide

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

$ curl "https://api.seodata.dev/v1/keyword?q=human+carbon+dioxide&country=us" +--------------+------------------+ | volume | 90 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-07 | +--------------+------------------+

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
co2 atmosphere percentage	1,900	$6.14	13/20
percentage of co2 in atmosphere	1,900	$4.05	12/20
where does the carbon dioxide come from	1,900	$0	12/20
what percentage of the atmosphere is carbon dioxide	1,900	$0.44	11/20
co2 atmosphere	1,600	$9.64	13/20
carbon dioxide human	90	$0	14/20
carbon dioxide humans	90	$0	14/20
carbon dioxide from humans	90	$0	13/20
carbon dioxide and humans	90	$0	12/20
do humans release carbon dioxide	90	$0	12/20

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=human+carbon+dioxide&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