keyword

free biology textbook pdf

Monthly search volume and cost-per-click data for "free biology textbook pdf" in US.

$ curl "https://app.seodata.dev/v1/keyword?q=free+biology+textbook+pdf&country=us" +--------------+------------------+ | volume | 50 | | cpc | $3.74 | | competition | 0.01 | | country | US | | updated | 2026-06-21 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
biology textbook	18,100	$0.9	13/20
biology text book pdf	720	$1.47	13/20
biology textbook pdf	720	$1.47	13/20
biology pdf books	170	$1.6	15/20
biology books in pdf	170	$1.6	14/20
books on biology pdf	170	$0	14/20
biology books pdf	170	$0	13/20
free biology textbooks pdf	50	$0	17/20
biology textbook pdf free	50	$3.74	16/20
biology book pdf free	50	$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=free+biology+textbook+pdf&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