Answer: General defence system: acts against all pathogens.
2. Specific defence system: attacks particular pathogens.
1. Examples of the general defence system.
Skin: provides a barrier to infection.
Clotting: when skin is broken it prevents entry of pathogens.
Sebaceous glands: found in the skin and produce chemicals that kill bacteria.
Sistem pertahanan umum: bertindak melawan semua patogen.
2. Sistem pertahanan khusus: menyerang patogen tertentu.
1. Contoh sistem pertahanan umum.
Kulit: memberikan penghalang untuk infeksi.
Pembekuan: ketika kulit rusak itu mencegah masuknya patogen.
Kelenjar sebaceous: ditemukan di kulit dan menghasilkan bahan kimia yang membunuh bakteri.
Here’s a hand drawing of it!
Answer:
Pasteurization kills the bacteria responsible for diseases such as listeriosis, salmonellosis, campylobacteriosis, typhoid fever, tuberculosis, diphtheria, and brucellosis, as well as other bacteria.
Explanation:
The safest place to take shelter in a tornado is the basement.
What is a tornado?
A tornado is a violently rotating air, that cause so much live harm and things.
It can totally destroy big buildings to uprooting plants.
When tornado came, we must hide in a safe place where the tornado can not reach.
There are three types of tornado:
- Multiple vortex tornado.
- Land spout.
- Waterspout
Thus, the correct option is a, basement.
The other options would be much riskier than being in a basement. A basement keeps you below ground away from the tornado itself or any debris.
Learn more about tornado here:
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