The possible direct effects of excess radiation exposure are cancer, genetic damage and radiation illness.
Answer: Option A, B, and C
Explanation:
Radiations which has the ionizing capacity is very risky for the living cells when exposed in large quantity. Even though each organ has different level of absorption of the ionizing radiations. But when exposed in excess, it will harm the living cells or organs more rapidly.
The most direct effect on high exposure can be seen as symptoms of vomiting and nausea leading to illness. This is usually termed as radiation sickness or illness. Similarly if large exposure of ionizing radiation is exposed to living cells then the chances of cancer and genetic damage of DNA is also possible.
As the high energy ionizing radiation will hit the DNA causing production of excess quantity of cells leading to cancer. Even the high exposure of radiation can cause mutations in the living cells leading to genetic damage.