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.
the larger one will not be able to survive because of how big it is. take a look at the big one. it has a few particles, but its extremely large. because of this it will die. the particles won't be able to travel all over the cell.
Well its a little deeper than that. The oxygen transport is made through Hemoglobin (red blood cells) which is pumped from the heart
Answer: Cant give a solid answer if theres no graph attached.
Explanation: My guess if it was a downward trend in population numbers with a downward trend in ice cap sizes or something, it would support global climate change because it shows the shrinkage of the population that is resulting from melting ice caps.
Answer:
The main ways to control a hazard include: Elimination (including substitution): remove the hazard from the workplace, or substitute (replace) hazardous materials or machines with less hazardous ones.