keyword

human sources of co2

Monthly search volume and cost-per-click data for "human sources of co2" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=human+sources+of+co2&country=us" +--------------+------------------+ | volume | 30 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-26 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
where does carbon dioxide come from	1,900	$0	20/20
where does the carbon dioxide come from	1,900	$0	20/20
co2 emissions by source	1,300	$7.92	13/20
sources of carbon dioxide	590	$0	13/20
natural co2 sources	320	$0	14/20
natural sources of carbon dioxide	320	$0	14/20
carbon dioxide human sources	70	$0	17/20
human sources of carbon dioxide	70	$0	16/20
3 sources of carbon dioxide	70	$0	14/20
what causes carbon dioxide emissions	20	$0	14/20

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://app.seodata.dev/v1/keyword?q=human+sources+of+co2&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt