The most important producer in both freshwater and marine ecosystems is phytoplankton.
The answer is Linux is an example of a popular open source operating system. The Linux open-source operating system, or Linux OS, is a generously distributable, cross-platform operating system based on Unix that can be installed on PCs, laptops, netbooks, mobile and video game consoles, servers, supercomputers and tablet devices.
answer is
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True!!
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Brainliest?