The phrase "also form the backbone" is correct and usable in written English.
It can be used to describe something that is fundamental or essential to a larger structure or system.
Example: "The dedicated team members also form the backbone of our successful project, ensuring everything runs smoothly."
Alternatives: "also constitute the foundation" or "also serve as the core".
They also form the backbone of trillions of dollars in transactions: Major corporations and banks use them as a place to park short-term cash; they are held by money market mutual funds; and they serve as collateral for millions of transactions in markets around the world.
While sweet Sauternes pairs beautifully with certain cheeses and lobster, here they also "form the backbone" for the sweets course, according to pastry chef Stéphane Corolleur.
Phytochemicals derived from plants also form the backbone of traditional medicine, which uses plant preparations as a source of drugs [ 2].
They also formed the backbone of an urban workforce that thrived when more than 100,000 troops and billions of dollars of relief money flowed into the country after 9/11.
The 40-minute show is heavily reliant on the Thomas Wyatt poem I Find No Peace (a line from which also forms the backbone of Preface, the opening track from her debut), and she reads it in full, in that breathy, cut-glass, girlish voice.
The highway also forms the backbone of many small villages and hamlets between the larger centres, such as Conn, Keldon, Primrose, Violet Hill, Rosemont and Nicolston.
Exports of farmed shrimp, eel, tilapia, shellfish and seaweed have also formed the backbone of Chinese seafood exports, accounting for about 50percentt of national seafood exports in terms of value.
The campaign's online donors have also come to form the backbone of its vaunted grass-roots operation across the country, with information about new donors quickly transmitted to organizers on the ground to enlist for phone banks and other volunteer efforts.
