When consumed together, grains and legumes are good complementing protein sources?

The statement that when consumed together, grains and legumes are good complementing protein sources is true. 
Legumes are plants that include beans, lentils, peas and peanuts, while grains are wheat, oats, corn, rice..
They are less expensive than meat, poultry and fish.
When eaten together provide a complete protein essential for health.

The short-term effect of tar on the body is increased blood pressure.