linux /vmlinuz-3.15.4-200.fc20.x86_64 root=UUID=8abb3dc5-d948-4941-92ce-690339d445e5 ro rootflags=subvol=root vconsole.font=latarcyrheb-sun16 rhgb quiet nouveau.modeset=0

add nouveau.modeset=0  to the end of  /boot/grub2/grub.cfg

change runlevel in fedora

With systemd, to switch runlevels:

systemctl isolate multi-user.target

or ++

systemctl isolate graphical.target

To change the default runlevel:

rm /etc/systemd/system/default.target
ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target

or 

ln -sf /lib/systemd/system/graphical.target /etc/systemd/system/default.target

systemd does not even use the /etc/inittab So changing it in there doesn't work anymore.

however any covalency will increase the network stability relative to purely electrostatic effects. The hydrogen bond in water dimers is sufficiently strong to result in the dimers persisting within the gas state at significant concentrations [1977] (for example, ~0.1% H₂O at 25 °C and 85% humidity) to contribute significantly to the absorption of sunlight and atmospheric reaction kinetics [266].
80% of the molecules of liquid water have one (cooperatively strengthened) strong hydrogen bonded O-H group and one non-, or only weakly, bonded O-H group at any instant (sub-femtosecond averaged and such as may occur in pentagonally hydrogen bonded clusters), the remaining 20% of the molecules being made up of four-hydrogen-bonded tetrahedrally coordinated clusters [613].