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.
A speaker giving a presentation using a projector. A presentation is the process of presenting a topic to an audience. It is typically a demonstration, introduction, lecture, or speech meant to inform, persuade, or build good will. The term can also be used for a formal or ritualized introduction or offering, as with the presentation of a debutante.