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:
There are 8 electrons in the outer ring, and has to react with 8 or fewer electrons to form a stable molecule.
Explanation:
The outer-most orbits of silicon contains a maximum of eight (8) electrons. It requires 8 of fewer electrons to form a stable molecule.
Answer:
biodiversity is the basis of agriculture and our food systems. agricultural biodiversity also performs ecosystem services such as soil and water conservation, maintenance of soil fertility, conservation of biota and pollination of plants, all of which are essential for food production and for human survival.
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Answer:
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Explanation:
Answer:Growth,Cell wall, Chlorophyll,Photosynthesis, Movements, Absorption of minerals, Special excretory system ,Centrosome, Lysosome,Vacuoles Cytokinesis.Animals can move from place to place while plants cannot move as they are rooted to the soil. Plants are autotrophs while animals are heterotrophs.The presence of chloroplasts and chlorophylls in plants while those are absent in animals.plants reproduce via seeds, spores, stems, roots and leaves while animals reproduce sexually by laying eggs or giving birth to young ones.
Explanation:
