D. Fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons.
The role of species in an ecosystem, consisting of such things as what it eats, when it eats, and where it lives is niche.
Chemical messengers and the Electrical signals are the two main methods by which cells communicate with each other to coordinate their functions and metabolic activities.
According to biologist, A cell communicates through chemical messengers, by sending the chemical signals to other cells and also receive that signal from another cell. Similarly, Electrical signals or impulses also work in the same way.
Therefore, body contains many types of lipids which works as a chemical messengers also electical signal or impulses can easily travel throught these lipids. Cell uses these chemical messengers and electrical impulses to communicate with other cell. Although, In order to trigger a response, these signals are transmitted across the cell membrane of the cell.
Learn more about cell communication here
brainly.com/question/18223077
#SPJ4
The statement is true. Atelectasis is the collapse or closure of a lung resulting in reduced or absent gas exchange. It may effect part or all of a lung. An airway blockage also can cause Atelectasis. A blockage may be due to a foreign object, a mucus plug, lung cancer, or a poorly placed breathing tube from a ventilator. When a blockage occurs, the air that's already in the air sacs is absorbed into the bloodstream.
Answer:
decreased body temperature
Explanation:
Muscles also need oxygen to function properly. Given that blood flow must be maintained at high levels to supply oxygenation and muscle substrates, mechanisms have been found to facilitate this process. Among the processes that facilitate the transfer of oxygen to tissues, we can mention lowering blood pH, increasing carbon dioxide and increasing exercise.
Lower body temperature, in turn, makes it difficult to transfer oxygen to tissues, causing fatigue, pain and other problems.
