The answer is C are limited to life in a single year
Artificial selection, also selective breeding occurs when humans breed individuals that have specific characteristics that they want to manipulate.
The word phase means to change a part of a development
It can be confusing because it isn't specific enough. In astronomy, the big dipper is not a spoon. It is a bear. Scientists know it as Ursa Major rather than a dipper or bear.
Environmental scientists are using GPS ( It is effective but expensive) aerial monitoring (Quick but not the easiest), RFID tags, (mostly for long-term monitoring) and hidden cameras are used to study polar bear behavior without interruption to their environment.