The correct answer is chloroplast. If an organism has chloroplasts then it will be an autotroph because it will be able to make its own food by the means of photosynthesis. This is common for plants but there are some bacteria that can photosynthesize as well. If you don't have them you have to feed on other organisms that have energy for you.
Observable characteristics would be referred to as "traits".
The social media play the role of the main issue in the outbreak in the Contagion movie. The character Krumwiede makes much false information with his blogs which create a different problem of contagious thing despite the virus<span>. Many people trust the blogs' information. This information made them buy a contagious virus rather than a medicine.</span>