3. What is the advantage of walking upright? __

## Step 1<br />The question is asking about the benefits of walking upright, also known as bipedalism. This is a characteristic feature of humans and some other species, such as birds and certain primates.<br /><br />## Step 2<br />The advantages of walking upright include the ability to see over long distances, freeing up hands for carrying objects or using tools, and the ability to travel long distances efficiently. This is because walking upright allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken.<br /><br />## Step 3<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 4<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 5<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 6<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 7<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 8<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 9<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.<br /><br />## Step 10<br />Walking upright also allows for a more efficient use of energy and resources, as it allows for a more direct path to be taken. This is because walking upright allows for a more direct path to be taken, which means less energy is wasted on unnecessary movements.