... Comprehend the pressure on the environment, resulting from rapid increase population5. Understand the problem of uneven distribution of wealth 6. Distinguish the problem of solutions offered to ... health such as cancer, damage to the brain, liver, kidney, bone marrow, embryo, skin, gastrointestinal organs, and to the central nervous system; second, these substances can cause long-term or ... material; example are bacteria and fungi.Environment: Sum of all external forces and conditions acting on an organism or a community of organisms.10Figure 4.5: Harmful effect of radiationThe...