When a Stickleback fish feels threatened, it will flare out its pair of pelvic spines and three dorsal spines, making it difficult for predators to swallow them.
Ecologists make models to gain insight into complex phenomena such as the effects of global warming on ecosystems.
hope this helps
Archaea means ancient, bacteria are, well, minuscule organisms that live everywhere, and eukarya are organisms with cells that have a nucleus as well as membrane-bound organelles... my best guess if it is planets you mean, then the answer would be archaea, if it is plants, like flowers or such, then it is eukarya.
I hope this helps!
The kinetic energy of an object depends on both its mass and its speed. Kinetic energy increased as mass and speed are increased.
The southern hemisphere would be experiencing winter :)