You can boil water to make water vapor. Then when the water vapor cools down again it becomes water again
The correct answer is carbon dioxide and oxygen
Answer:carbon can be form naturally or artificially, both give energy by giving heat power.
Explanation:
Answer:
Control group
Explanation:
In an experiment, the group which receives the treatment (in this case injection of actual drug) is known as experimental group because the experiment is being conducted on it. While on the other hand the group which do not receive the treatment is known as control group. The results obtained from the experimental group are compared with the control group to determine the effectiveness of the treatment.
Answer:
write the procedure in the passive voice (reporting fashion )