Question

it is hard to narrow down the cause of all cancer but ultimately, cancer is caused by.... known carcinogens. mutations in genes that control cell growth. eating too much taco bell. proto - oncogenes what two factors contribute to cell mutations associated with cancer? x factors and y factors infectious factors and environmental factors

Explanation:

Cancer is ultimately caused by mutations in genes that control cell growth. Infectious factors (like certain viruses) and environmental factors (such as radiation, chemicals) can contribute to these mutations. Known carcinogens are part of environmental factors but not the ultimate cause - it's the gene - mutations they can trigger. Eating too much Taco - Bell is not a known cause of cancer. Proto - oncogenes are normal genes that can become oncogenes when mutated, but they aren't the cause in themselves. For the second question, infectious and environmental factors are well - known contributors to cancer - related cell mutations.

Answer:

1. Mutations in genes that control cell growth.
2. Infectious Factors and Environmental Factors