Answer:
d. Smoking
Explanation:
Nicotine is a chemical found in many plants such as tobacco. It is one of the 4000 chemicals that tobacco presents and the main component that acts in the brain.
This chemical is absorbed through the skin and lining of the mucosa of the nose and mouth, or in the lungs by prior inhalation. Nicotine can quickly reach the bloodstream and brain and reach maximum levels. The action of smoking cigarettes causes nicotine to reach the brain in just 10 seconds after inhalation. Although the acute effects dissipate in a few minutes, they cause the need to continue the intake of the substance (addiction)
D) oxygen, carbon dioxide when you breathe in, you take in oxygen and when you breath out, you release carbon dioxide.
<span>Commercialism—A relationship where one species obtains food or shelter from the other species
<span>Mutualism—A relationship where both species benefit from the relationship.
Sorry i only know two on top of my head</span></span>
Answer:
The answer is the last one.
Explanation:
becouse not all organisms have same cell structure for example the plant cell has organelles and structures that are different from animal cells..there you go.
