Drugs that break down a psychological barrier against doing other drugs are known as gateways drugs.
A very known gateway drug (or at least one that has been considered as such) is marijuana or weed. A drug that is being widely consumed in various countries and is also being sold as a legal drug in some countries.
The heart, the blood vessels, and the veins are the components that carry oxygen from the heat to all parts of the body
I will answer but I dont understand the question. Do you have a picture of it?
A serving of food that has 10 to 19 percent of a nutrient based on a 2000 calorie diet is considered to have a rather imbalanced nutrient portfolio. Although it is also questionable and true what nutrient we're talking about If we're on a high fat diet, having only 10 to 19 percent of carbs for that serving would be considered good.