Aside from invasives like the crown-of-thorns starfish, what other factor is killing the Great Barrier Reef? O increased temperatures
O overactive algae
O reactive forms of oxygen
O coral bleaching

increased temperatures

Explanation:

The temperatures are increasing in the ocean because of ocean warming, by climate change. The heat in the ocean stresses healthy corals, which drains them of their vibrant colors, known as bleaching.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."