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.
Because you breathe faster and in effort to quickly bother the oxygen rich blood to you body
1) true
2) false
3) true
4)true
5) true
7) true
8) false
9) true
True, Childhood obesity imposes substantial economic costs.There is considerable knowledge about the risk factors associated with childhood obesity.
Research and scientific information on the causes and consequences of childhood obesity from the platform on which to build our national policies and partner with the private sector to end the childhood obesity .
Obesity is reefer to excess body fat , is difficult to measure directly , obesity is often measured by body mass index ( BMI) a common scientific way to screen for weather a person is under weight normal weight , overnight .Obesity has become dramatically more common among Americans of all ages.
To learn more about Childhood obesity here
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Physical Fitness is defined as the ability to carry out daily tasks with vigor
and alertness, without undue fatigue, and with ample energy to enjoy
leisure-time
pursuits and respond to emergencies.
1. is D
The Dietary Guidelines makes recommendations for healthy eating that can be adopted by the public.
2. is C
