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:
Answer:
register with their states to vote.
Explanation:
The purpose of the voting registeration is to ensure that there is no illegal votes conducted to manipulate the resut.
Without the registration, citizens from other states could come to different states in order to vote for their candidates multiple times without getting detected
Answer:
feeling better mentally – regular exercise can lift your mood and help you feel better.
saving money – eating junk food, smoking, and drinking sugary drinks or alcohol are all expensive habits.
Explanation:
Answer:
Less stable teenagers may experience anxiety and depression and may experience mood swings.
