The two categories would be Biotic and Abiotic
Answer:
Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms. Please Mark Me Brainliest
Explanation:
Answer:
There are a bunch of things.
Explanation:
Smoking and Tobacco.
Diet and Physical Activity.
Sun and Other Types of Radiation.
Viruses and Other Infections.
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