<span>According to the Centers for Disease Control and Prevention (CDC), diseases caused by smoking kill more than 480,000 people in the U.S. each year. In fact, smoking is directly responsible for almost 90% of lung cancer and COPD deaths. Even with antismoking campaigns and health warnings, many people continue to smoke or start to smoke every year. About 8% of kids under the age of 18 years are current tobacco users.</span>
<span>The seminiferous tubules are the site of the germination, maturation, and transportation of the sperm cells within the male testes. Seminiferous tubules are made up of columnar Sertoli cells surrounded by spermatogenic cells on the epithelial interior and stem cells exteriorly.</span>
Answer:exposure to radiation
natural errors in cellular process
Subjection you’re Xrays
Explanation: if gametes aren’t being separated or divided you can of course have chromosome mutation. Also, exposure to certain chemicals, or radiations Will also cause chromosome mutations.
