Answer:
In our respiratory system, there is a pair of external nostril situated above the upper lip that receives atmospheric air and passed to the pharynx (a common passage for air and food). The pharynx passed this air to the trachea via larynx (known as the soundbox). The trachea is an extended part which is divided into left and right primary bronchi. Bronchi divide into secondary bronchi, tertiary bronchi, and bronchioles that ending up in thin terminal bronchioles. Each terminal bronchiole constitutes a number of irregular-walled, thin and vascularised bag-like structures called alveoli which are the primary sites of gases exchange.
Answer:
direct op means count one by one .
Answer:
A disadvantage of artificial selection is that it reduces the variation in a certain species.
The radiologic
skeletal survey is most useful tool for detecting occult trauma fractures in children
younger than 2 years old. A current policy states that skeletal survey is
mandatory in all cases of suspected child abuse because younger
children are easier to lift, shake, throw, pull and fall. Moreover, occult fractures can be detected by bone scan
though; bone scan is not specific for fracture but still most useful in
detecting occult rib fractures.
The molecule shown below is a molecule that is generally termed as the energy currency molecule of the cell, and that is ATP.
The components of it include:
1. Adenine nitrogenous base, the far left
2.Ribose, sugar the same sugar found in RNA molecules, middle.
3. Triphosphate - 3 covalently bound phosphate groups ready to split apart as they don't typically like being bonded in that manner, due to charges on phosphate, being negatively charged.
