Answer:
Explanation: The heart pumps blood through the network of arteries and veins called the cardiovascular system.
Answer: Not become exposed to the virus
Explanation:
Answer:
12
Explanation:
<u>1 </u> = <u> x </u> =3 tablets x 4 (bc 24 hours/6 hours= 4)
325 975
30 compressions and 2 breaths
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.
