The correct answer is B. Books, hope this helps :)
First one; Reinforcement and second one; Biologically.
<em>Hope this helped! :)</em>
Answer:
Millets are a group of highly variable small-seeded grasses, widely grown around the world as cereal crops or grains for fodder and human food. Millets are important crops in the semiarid tropics of Asia and Africa, with 97% of millet production in developing countries.
Explanation:
The solid, plastic layer of the mantle is called the asthenosphere. It is located beneath the lithosphere and is considered very mechanically weak. It is different widths depending on the temperature.