C. a toy train is the item that has characteristics similar to a scientific model.
The answer u r looking for is- D, Nuclear Envelope. Hope I’ve helped ;)
The answer in the spaces provided is venture and calamity. The answer is venture because sky-diving is considered to be a an activity that seems to be adventurous and dangerous in which venture means while it also results into calamity because it causes distress in which she has injured herself.
Chemicals produced by bacteria that limit the growth of other bacteria are called antibiotics.