One electron is transferred in the ionic bond because sodium needs to lose one electron and chlorine needs to gain one electron to have a full energy shell, which is the ultimate goal in any bond. 
Brainliest please :)
 
        
             
        
        
        
Answer:
A <u>fetal death</u> is death prior to the complete expulsion or extraction from its mother in a hospital facility, of a product of human conception (fetus and placenta), irrespective of the duration of the pregnancy and without any signs of life.
Explanation:
Due, to lack of nutrition or care some mothers loses there new born before the delivery, while most of the time such miscarriages results in the death of the fetus that is yet to be developed properly inside the womb of its mother. It all can happen due to mental, emotional, or physical stress on the female. However, it can be prevented by providing proper care to the mother and having the best of procedures to deal with any situation faced during the development of the fetus or offspring during the tenure of pregnancy.
 
        
             
        
        
        
Repeated exposure to radiation can increase the risk of cancer.
<h3>What is cancer?</h3>
- A set of illnesses known as cancer involve abnormal cell proliferation and have the ability to invade or spread to different bodily regions. 
- In contrast to this, benign tumors do not spread. 
- A lump, unusual bleeding, a persistent cough, unexplained weight loss, and a change in bowel habits are all potential warning signs and symptoms. 
- These signs of cancer may be present, but there may be other causes as well. 
- Humans are susceptible to over 100 different malignancies.
<h3>What are the four primary cancer types?</h3>
- Carcinomas. The skin or the tissue that covers the surface of internal organs and glands is where a carcinoma first appears.
- Sarcomas. The tissues that support and bind the body give rise to sarcomas. 
- A cancer of the blood is leukemia. 
- Lymphomas.
Learn more about cancer here:
brainly.com/question/8590464
#SPJ4
 
        
             
        
        
        
Answer: D. adaptations that organisms make to the environment during their lifetimes. 
Adaptation is a process in which changes occurs in an organism so as to make it better suited for the environment. It is the result of natural selection. In adaptation the traits of an organism gets modified by the process of natural selection which results in evolution of an organism.