1 You can also get sufficient protein from plant-based foods if you eat a variety of them throughout the day. 2  Plant sources include soy products and meat substitutes, legumes, lentils, nuts, seeds and whole grains. 3  Vitamin B-12 is necessary to produce red blood cells and prevent anemia.
Learner's definition of LECTURE. [count] 1. : a talk or speech given to a group of people to teach them about a particular subject. a lecture about/on politics. She's planning to give/deliver a series of lectures on modern art. Several hundred people are expected to attend the lecture.
The purpose of this lecture is just to review the various motions observed in the heavens in the simplest, most straightforward way. We shall ignore for the moment refinements like tiny deviations from simple motion, but return to them later.