Chromium OS. Chromium OS is an open-source project that aims to build an operating system that provides a fast, simple, and more secure computing experience for people who spend most of their time on the web. Here you can review the project's design docs, obtain the source code, and contribute.
1 Common orange â There are many varieties of common orange and it is widely grown. 2  The most common varieties of common oranges are the Valencia, Hartâs Tardiff Valencia, and the Hamlin, but there are dozens of other types.
According to molecular studies, the mandarin, the citron, the pomelo, and the papeda were the ancestors of most other commercial citrus varieties, through breeding or natural hybridization; mandarins are therefore all the more important as the only sweet fruit among the parental species. Tangors, or temple oranges, are crosses between the mandarin orange and the common sweet orange; their thick rind is easy to peel and its bright orange pulp is sour-sweet and full-flavored.