Plz give me all answers class 8 science
Answers
Answer: it’s a pleasure for me to help you friend.
Explanation:
1. The Disease-causing microorganisms are known as pathogens. They are also called with another name called “ germs ”.
2. A. Organic farming is that type of farming in which organic manure & natural pesticides are used in place of chemicals and in which no genetic modification is done to increase the yield of the crop. Contour Ploughing. The practice of ploughing against the slopes on the hill is known as contour ploughing.
B. It Improves soil fertility and maintain biological diversity. It is Good for the environment and yields are healthy for human and animal consumption. it Prevents soil erosion, degradation and crop failure. It Decrease pollution and the whole farming can easily rely on renewable energy sources.
3.a. When we sneeze, the tiny particles of droplets from our mouth spread throughout the surface and when the droplets get in contact with others, it goes inside the skin and makes them get cold too. When we use a handkerchief to cover our mouth, we can avoid it.
B. The modes (means) of transmission are: - Contact (direct and/or indirect),
- Droplet,
- Airborne,
- Vector and
- Common Vehicle.
The portal of entry is the means by which the infectious microorganisms gains access into the new host. This can occur, for example, through ingestion, breathing, or skin puncture.
C. Yes, because it was a preventative way so that others wont get contact with the cold producing particles.
D. A diseased or unhealthy person is the value of Seema shown here.
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