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:
Indians is what he called them
Answer:When the new Constitution was ratified, the Electoral College unanimously elected Washington President. He did not infringe upon the policy making powers that he felt the Constitution gave Congress. But the determination of foreign policy became preponderantly a Presidential concern.
Explanation:
Answer:
growing even though the fertility rate is decreasing
Explanation:
we know about our past all over people had not be educated even their fertility rate ll
