Answer:
C. Spiral Galaxies is the answer
Answer:
The missing options are:
- steroid hormones
- carbs
- essential fatty acids
- PHO
The correct answer is essential fatty acids.
Explanation:
Essential fatty acids are the fats that our body can not produce by itself, but that are essential for the function of the body, so we have to consume foods that have these fats, such as fish, oysters, nuts, chia seeds, soybean oil, etc. The deficiency of these fats causes skin problems, alopecia, anxiety, depression, among other things.
B. they are single molecules...
Answer:
carbon dioxide, methane, nitrous oxide, water vapor
Explanation:
these all are greenhouse gases
hope this helps :)
The answer is: Difficult to control all variables except one being tested
