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keyword

carbon dioxide in human breath

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

$ curl "https://app.seodata.dev/v1/keyword?q=carbon+dioxide+in+human+breath&country=us" +--------------+------------------+ | volume | 20 | | cpc | $0 | | competition | 0.01 | | country | US | | updated | 2026-05-26 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
what do we breathe out 2,400 $0 10/20
do humans produce carbon dioxide when breathing 30 $0 11/20
do you exhale co2 20 $0 12/20
human breathing carbon dioxide 20 $0 12/20
do we need carbon dioxide to breathe 20 $0 10/20
do we produce carbon dioxide 20 $0 10/20
how much co2 do you exhale 20 $0 9/20
do people exhale carbon monoxide 10 $0 9/20
how much carbon dioxide do we exhale in one breath 10 $0 9/20
how much co2 human exhale 10 $0 9/20

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=carbon+dioxide+in+human+breath&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