2. Many snakes have to. Can it be used for protect themselves from enemies. Can be a toxic substance which can be deadly. Examples of poisonous snakes is...

3. Many spesies sea have to. Can it be used for protect themselves from enemies. Can be emits black ink. Examples is...

4. 4.Of the following experiments will proving the properties of objects. Hot water is poured on glass, plastic cups, mugs, and aluminum kettle with the same amount and at the same time. Things that will make the longest cold water in the same time is...

4. 5.Masehi calendar is also called the solar calendar. Masehi, one year is devided into 12 months. Leap year is the year that the number of day 366 days. Determination of masehi is based on the calendar...

4. 6. The power plant uses substitute energy sources such as water, solar thermal, and wind power plants also use the energy sources from fossil fuels. For example, petroleum and coal. Sources of electrical energy that can be discharged is...

4. 7.The process of ice changes substances....
   

4. 8. Flexible, robust, and finely fibrous is characteristic of the tree...
   

4. 9. Delivery of hot events an object to another object when the object is in contact (interaction) is called conduction. Heat always flows from high temperature place to place...
   

4. 10. The water cycle starts with the process ..., ...., then precipitation and repeats without stopping.

5.