Exchange of gases in fish is very efficient because of: the large surface area of the gills. the large surface area of the blood capillaries in each gill filament. the short distance required for diffusion – the outer layer of the gill filaments and the capillary walls are just one cell thick.
Answer:
An ecosystem consists of all the organisms in an area, the community, and the abiotic factors that influence that community. Ecosystem ecologists often focus on flow of energy and recycling of nutrients. Biosphere: The biosphere is planet Earth, viewed as an ecological system.
During many epidemics, <u>healthcare </u>professionals emphasize the importance of community mitigation strategies, such as wearing masks, frequent hand-washing, and social distancing because these strategies help <u>reduce </u><u>transmission </u><u>even when drug-based treatments and vaccines are unavailable.</u>
It is of <u>vital </u>importance in cases of epidemics to implement strategies such as:
- Hand-washing
- Wearing masks
- Social distancing
in order to better protect our communities and ourselves.
Frequent hand-washing serves to<u> eliminate the presence of a </u><u>pathogen</u> <u>from the surface of your hands</u>, reducing the risks that it will find entry into your organism or land on a surface with which others will come into contact. Should you or someone else contract the pathogen anyways, wearing a mask can help to reduce or deny the possibility of transmitting the disease.
Finally, should both previous measures fail, meaning that the virus or pathogen has infected an individual and penetrated the masks, social distancing can act as a <u>final barrier</u> that the pathogen will rarely be able to surpass, given that most pathogens <u>cannot remain airborne over large distances. </u>
For these reasons, healthcare professionals emphasize the importance of these strategies because they help reduce transmission <u>until vaccines or drug-based treatments become available and </u><u>herd immunity </u><u>can be reached. </u>
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Answer:
Production for Medical Use
Explanation:
There are some examples where human hormone genes are excised and placed into bacterial DNA. An example of this is Human Growth Hormone, which is mass-produced for human use by bacteria.