The answer is
b. The food runs out and visuals in population starve
Answer:
proto-oncogenes are normal genes while onco genes are cancerous genes.
Explanation:
Proto-oncogenes are genes which responsible to make protein and helps in controlled cell growth and proliferation but some time these proto-oncogenes can turned into onco genes because of some abnormal mutation and results in uncontrolled proliferation and cell growth which cause cancer.
Lithosphere, hydrosphere, biosphere and atmosphere