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keyword

breathing oxygen exhaling carbon dioxide

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

$ curl "https://app.seodata.dev/v1/keyword?q=breathing+oxygen+exhaling+carbon+dioxide&country=us" +--------------+------------------+ | volume | 40 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-03-31 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
what does the respiratory system do 4,400 $0 13/20
what do we breathe out 2,400 $0 19/20
human breathing system 2,400 $0 14/20
human respiratory system 2,400 $0 14/20
respiratory system human 2,400 $0 13/20
how does the respiratory system work 1,900 $6.92 14/20
how does respiration work 1,900 $14.1 13/20
breathe in oxygen breathe out carbon dioxide 50 $0 13/20
when we breathe in oxygen what comes out 50 $0 13/20
do we breathe oxygen or carbon dioxide 40 $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://app.seodata.dev/v1/keyword?q=breathing+oxygen+exhaling+carbon+dioxide&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