Answer:
c.Fossil fuels are considered renewable resources.
Answer:
the alveoli are made of thin squamous (type I) alveolar cells which allows for the quick diffusion carbon dioxide and oxygen.
Explanation:
Diffusion of gases takes place between the alveolar cavity and the blood in the capillaries. Oxygen being more concentrated in the alveoli diffuses across the epithelium of the alveoli and the endothelium of the capillaries into the blood. The epithelial walls of the alveoli are moist and thin thus enhancing the diffusion.
Answer:
why are these same questions its earth and people i think
Until a couple of decades ago, such trees were usually based on the morphologies of species. Since the development of genetic sequencing, however, that has
It increases its metabolic activities to produce energy for the growth process. The water causes the turgor pressure to increase in the cells and they are able to enlarge.
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