Answer:
Formaldehyde is a highly reactive molecule that can be directly irritating to tissues with which it comes into contact. Human and animal studies indicate that formaldehyde, at certain exposure levels, can be irritating to the upper respiratory tract and eyes with inhalation exposure, to the skin with dermal exposure, and to the gastrointestinal tract with oral exposure. Formaldehyde-induced noncancer and cancer effects appear to occur only at portals-of-entry (i.e., upper respiratory tract, gastrointestinal tract, and skin).
Looking at all of the options available, only 2) is a criticism. The media sometimes ignores opposing views.
Saying the media is unbiased is not criticism, neither is saying they research their stories or use a variety of sources.
I hope this helps! :)
For one this isn't a history question its biology and number two the answer is C. it converts light energy to chemical energy
Serfs/Peasants would live on the protected land of the lord's manor in exchange for food and goods. The serfs/peasants basically fueled the manor and created self sufficiency, to the point where some lords even forbade Serfs/Peasants to leave their estate.
Hope this helped you
