Well lava isn't just plain liquid for instance water runs through a stream fast but lava contains rocks and other materials so it runs slowly
Answer:
STEM CELLS
They serve as a repair system for the body.
The genes for sex-linked disorders are found on a sex chromosome, but the genes for other inherited genetic disorders are found on other chromosomes.
Traits such as skin color and height are variable throughout the human population because these traits are controlled by more than one cell. The cells don't perform at the same rate and don't produce the same biomolecules. Therefore, the maximum height of a person is not achieved which results to variations.