HOMEWORK : Dangerous chemical subtance and their symbol in the laboratory

You have already learned various kinds of dangerous chemical, so those materials must be used carefully. When we work in the laboratory, we will deal with dangerous chemical, so we must be careful. On the package of chemical, usually there are symbol which show the danger level.

QUESTION
1. Mention many kinds of dangerous chemical!
2. Explain the good condition for storage of dangerous chemical each material chemical!
3. What must be do to prevent us from intoxication in the lab?
4. Mention the examples of poisonous materials!
5. What is the symbol to show a flammable chemical?

GOOD LUCK

HOME WORK : BIOTIC AND ABIOTIC PHENOMENON

Problem :
Yuna observes two rose flowers in a pot. One pot in house inside and the other in the garden. Both of flowers have the same colour and same species. After two month, the result condition of both flowers are different. The rose flower which in house inside grow more thin and it leaf look so pale then the rose flower in the garden.

Question :
1. Based on Yuna's problem, mention the variable of the research!
2. Based on Yuna's problem, mention the independent variable!
3. Based on Yuna's problem, mention the dependent variable!
4. Based on Yuna's problem, mention the control variable!
5. Based on Yuna's problem, mention the disturber variable!

GOOD LUCK

observation

Observation can be conducted not only in the laboratory, but olso in the field or nature.
Observation devided into two (2), they are:
1. Qualitative observation is observation using senses direcly
example : The flowers is yellow
2. Quantitative observation is observation using meassurment tool
example : The hight of yuna is 164 cm

gambar ekosistem

ekosistem

Ekosistem merupakan gabungan dari beberapa komunitas yang luas. Berdasarkan bentuknya ekosistem di bagi menjadi dua macam yaitu ekosistem alam dan ekosistem buatan. Ekosistem alam merupakan ekosistem yang terjadi secara alami, misalnya laut, hutan, pantai dll , sedangkan ekosistem buatan merupakan ekosistem yang sengaja dibuat oleh manusia, misalnya kolam, kebun, aquarium dll.

Satuan-satuan ekosistem dari yang terkecil sampai yang terbesar terdiri dari individu, populasi, komunitas, ekosistem.

postingan pertamaku

Selamat datang di blog aku. Blog ini merupakan blog pertama yang aku buat. Saya bentuk sebagai sarana untuk mempermudah pembelajaran biologi di sekolahku.

Untuk perkenalan namaku yuni, aku anak kelima dari tujuh bersaudara, saudaraku tiga cowok dan tiga cewek. Aku lahir di desa Jabung kecamatan Mlarak kabupaten Ponorogo propinsi Jawa Timur. Tepatnya 10 kilometer sebelah selatan kota Ponorogo