It is Big Bang and cannot be proved. A hypotheses must be testable. Big Bang is not testable.
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.
Two important factors is temperature and liquid water.
Animals because that is not part of a cell house
Answer:
A=2 B=4 C=3 D=1
Explanation:
Identifying the stages of succession assignment