Sattva, rajas and tamas are her modes
'Sattvam rajas tama iti prakrter gunah' (SB 1.2.23).
Concept
Prakriti
प्रकृति
Also known as प्रधानम् · Pradhana (the primal nature)
Prakriti is primordial nature of the Sankhya-Vedanta tradition: the insentient, three-mode matrix from whose evolution the subtle and gross cosmos unfolds, distinct from the purusha. In the processed verses: sattva, rajas and tamas are her modes (SB 1.2.23); the one supreme Purusha yoked with them bears the world's maintenance, creation and dissolution as Hari, Virinci and Hara (1.2.23); and those of rajas-tamas nature worship the pitrs, bhutas and Prajapati for gains (1.2.27).
Śrīmad Bhāgavata Mahāpurāṇa 1.2.23 — Sanskrit Wikisource (pinned oldid=110173)
Rajas-tamas natures worship lesser beings for gains
Those of rajas-tamas nature worship pitrs, bhutas, Prajapati etc. for fortune, power, progeny: 'rajas-tamah-prakrtayah... bhajanti' (SB 1.2.27).
The elements, senses and mind could not build a body while they stood unjoined
'yadayatana-nirmane na shekur brahma-vittama' (SB 2.5.32); 'tada samhatya canyonyam bhagavac-chakti-coditah' (SB 2.5.33) — the making was by the Lord's power, not by the elements.
Also called the primal nature
At SB 3.9.44 the Lord is called 'pradhAna-puruSheSHvaraH', the Lord of primal nature and of the Person. Pradhana is a name of prakriti, which is why it is recorded as an alternate of prakriti rather than as a separate entity.