Here are some that u can choose from:
1.gas filled cars
2.factory's
3.people putting stuff in lakes,pond etc.
4.buildings
The correct answer is the pancreas
ISDN uses digital transmission encoding scheme known as 2 binary 1 quaternary or 2B1Q. The 2B1Q means that there are four possible signal levels and that each signal level encodes two bits of information.
Hope this helped :)
Gills enhance diffusion between aquatic creatures' blood and the surrounding water. They have a large surface area to increase the area available for gas exchange and a lot of capillaries to increase the bloodflow through the gills.
