Answer:
Birds’ feathers are designed to be light but very strong, flexible but very tough. Although it looks like feathers grow all over a bird, they actually grow in specific areas called feather tracks. In between the feather tracks are down feathers. This keeps the body weight down.
Feathers are made of a tough and flexible material called keratin. The spine down the middle, called the shaft, is hollow. The vanes are on the two halves of the feather. They are made of thousands of branches called barbs. Because there are many spaces between these barbs, a feather has as much air as matter.
Explanation:
Algonquin and Sioux is what I think I am pretty sure that is the answer i might be wrong tho
Answer: Resistance
Explanation: Resistive attitude is the attitude shown by a person that tends to work or think against of something. These type of people are not open towards the change happening in their surroundings.
The example mentioned in the question also displays the behavior of resistance in which is is not able to accept the accent of Professor Yang's .He dropped her class because the resistive attitude regarding the normal accent.
In 1947 Thor Heyerdahl sailed a simple raft from Peru to Polynesia, following the ocean currents for more than 6,000 kilometers. This statement accurately describes what Heyerdahl proved by this voyage. It would have been possible for people from ancient Peru to reach Polynesia by following ocean currents.