Answer:
option 3
Please mark me brainliest!
Answer:
engine exhaust, domestic heating, volcanic eruptions
Explanation:
Proteins help to build, repair, and maintain the body's structures. Animal foods typically have more protein than plant foods.In most cases, animal foods provide complete protein.Proteins are made up of amino acids and the body needs all 22 types of amino acids to function correctly. However, the body cannot produce nine of them. A complete protein source refers to a type of food that contains all nine.
Stand up and hold a book or other object in your hand. Flex your bicep muscle and lift up the lower part of the arm that is holding the object. --> lever
Next, pretend you are kicking a ball by making a kicking motion with your leg. --> lever
Finally, sit on the edge of your chair and bring both legs up and hold them parallel to the floor and then bend them back down again. --> lever
Brainliest would be GREAT!!
As we all know, America is a sports-crazed country. Almost every American takes part in an athletic event, either as a spectator or as a competitor. There is one sport that stands out in the pantheon of great American sports. It's been dubbed "America's favorite pastime." Tennis, well, that wonderful game. Tennis demands the mastery of a variety of skills in order to compete, but the serve is the most important skill to acquire in order to win. Because it is the only time a player gets to bring the ball into play, the serve is the major offensive weapon utilized in tennis.
The ball's speed, placement, and spin are all controlled by the player. The serve can help the server win a lot of points and games if it is done correctly. The server should hold the racket in his or her right hand while keeping his or her right arm straight and toward the ground. The racket hand should be pointing toward the net. The ball should be held in the server's left hand, with the ball contacting the racket face.
The serve itself necessitates both timing and quickness. By completely extending his or her left arm, the server should toss the ball straight up into the air. To aid in sighting the ball as it ascends, he or she should keep the left arm fully extended. The server should twist the racket head away from the net while the ball is in the air, then bring it straight up until the frame almost contacts the right shoulder blade. Meanwhile, the server's weight should be shifted to the right leg.
The server should then jump up and fully extend his or her right arm toward the ball, slightly bending his or her right wrist to bring the racket face into touch with the ball as the ball reaches the peak of its ascension. Then he or she should continue the forward motion of the racket by following through on the stroke, bringing the racket across the body and pointing to the ground on the server's left side.
