The answer to the question "When a part rusts is becomes heavier or lighter?" is the rust actually has a tendency to flake off. But as long as the rust is still on the nail, the nail will be heavier. The reason is that you are actually adding an oxygen and hydrogen to the nail.
Answer: 1 day on grus aircraft and 1 hour on the moon
The correct answer for this question is this one: C:"It provides support." There exists the same question with the same choices. The function of the cell structure that is labeled X is that it provides support.
The field of systematics deals with the diversity of living organisms and the relationship between these organisms.
Scientists in this field classified the living organisms and organized them into classes.
