Answer: C. David feels sad for a long period, even when something good happens.
Explanation: i felt like that.. so they decided i needed a therapist... funny cause my friend David helped me through those tough days.
It is True. Stress can cause all sorts of problems for a person.
Answer:
Water
Explanation:
Because if drink a sports drink it has a lot of sugar and you might get the calories back. But if you drink water it wont do you any harm because water doesn't have any sugar and you might loose a bit more weight.
Hope this helped!☺
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.
