when nicotine binds to nicotinic acetylcholine receptors in the brain, This causes the release of a specific neurotransmitter called dopamine.
<u>Explanation:</u>
- Dopamine is a neurotransmitter in the brain which causes pleasure to the brain but it is a complex chemical. Generally, dopamine gives a feeling of motivation, happiness, and focus.
- Due to the intake of nicotine, dopamine is secreted at a high level and it increases the excessive qualities of dopamine.
- It cause a serious problem in the brain. High secretion of dopamine will make us lose interest and became more complex in us.
Explanation:
Competition is a limiting factor, which has the the potential to limit, the growth, distribution and abundance of species in an ecosystem or are. Mostly, the competition is between the members of the same species (intraspecific competition) but it can also be among different species (interspecific competition). In a competition the stronger and superior one usually have more chances of obtaining resources like food, shelter, mate or other than the weeker or inferior one.
Three organisms battling over limited resources is an example of competition because three organisms are fighting for the same resources, hence, the stronger one will obtain those resources, in the competition.
20 amino acids are found in <span>living organisms. </span>
Answer: fibrous periosteum
<span>The diaphysis is the main shaft of a long bone which is made up of cortical bone which contains bone marrow and fats. It is covered by a fibrous connective tissue called the fibrous periosteum. The cells in this layer are densely packed and contain blood vessels, nerve endings and lymphatic. </span>
In order for respiration to occur in cells it needs ATP/ energy that is produced from the digestive system via the breakdown of glucose. The respiratory system inhales oxygen that is needed and the circulatory system enables the transport of oxygen to the other parts of the body.
