1. Gratitude can     common days into thanksgivings, turn routine jobs into joy, and change ordinary opportunities into blessings. 


2. Optimism about housing values led to a     in home construction. 


3. Biking and walking are becoming increasingly more popular     of daily transportation. 


4. Compulsive hoarding occurs when a person acquires an     number of animals or objects and is unwilling to part with them. 


5. Some bacteria and viruses have developed ways of avoiding     system defenses and causing sickness. 


6. If a product is labeled weather resistant, it means it's designed to     light exposure to the elements--sun, rain, and wind. 


7. In the face of unjust     we can become bitter or better; upset or understanding; hostile or humble; furious or forgiving. 


8. Passive-aggressive behavior from workers and managers is damaging to team     and productivity. 


9. One person was reportedly killed, and thousands are without power after Tropical Storm Gordon made     between Alabama and the Florida panhandle with high-force winds and a heavy downpour. 


10. The growth of renewable energy across Latin America is creating a new economic    -exploiting those natural resources for domestic growth. 


11. Many relationships     because they change and stop making the efforts to keep the love alive.  


12. Trust is like glass     to be protected because once it is broken it can never be fixed. 


13. The birth of modern research ethics began with a desire to protect human subjects     in research projects. 


14.     constitutes ethical research is important for all people who conduct research projects or use and apply the results from research findings. 


15. The country's population aged 65-and-over reached 50 million for the first time in 2016 and is expected to continue growing     the “baby boomers” reach retirement. 


16. The more generous we are,     we become. 


17. Terrorism is not new,     of trying to prevent it through counterterrorism measures. 


18. Ensuring food safety is one of those federal government     we only notice when it fails. 


19. All researchers should be familiar     the basic ethical principles and have up-to-date knowledge about policies and procedures designed to ensure the safety of research subjects. 


20.     doesn't just tell us about fossil fuel pollution or the release of banned chemicals.