An experiment or survey must be controlled in order to receive accurate results.
In an experimental group, the independent variable is changed. But in the control group, the independent variable stays the same.
Answer:
Glucose
Explanation:
Glucose is an important carbohydrate. Other carbohydrates include starch, lactose, cellulose, and fructose.
1.Scaly skin. This keeps the animal from losing too much water to the environment.
2. <span>Shelled
amniotic egg. This allows the egg to incubate on land without drying
out, allowing the adults greater range on land than would be the case if
they had to return to water to lay eggs. </span>