Answer:
a mass of cancerous cells grows, it can develop into a tumor.
Explanation:
Atoms are electrically neutral because they have equal numbers of protons positively charged and electrons negatively charged.
Answer
polydactylism
These kitties are born with an abnormal, dominant genetic mutation called polydactylism. While the polydactyl cat's appearance is quite unique, the polydactyl gene is somewhat common. Normally kittens are born with five toes on their front paws and four in the back.