A friend of yours appears to have put on a lot of muscle very quickly. At the same time, you notice that your friend seems to have a lot of mood swings and appears depressed. It is reasonable for you to suspect that your friend has begun to take .

An anabolic steroid

Explanation:

Anabolic steroids ca also e referred to as anabolic-androgenic steroids. They are synthetic or man-made steroids that mimic natural androgens like testosterone in their structure and functions. It is majorly used for muscle mass building.

When anabolic steroids are misused or abused, it can have an effect on an individual's mental health and presenting symptoms like depression, mood swings, mania, aggression etc.

Some athletes and bodybuilders take anabolic steroids to promote building of their muscle mass rapidly.  

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

where is the scientific experiment?