answer would be A I believe. Im not 100% sure though.
An independent variable that is manipulated means to achieve a particular effect or tested to determine if it is the cause of the effect.
For example, to find out if your weight depends on the amount of calories you consume, you could lower your caloric intake (calories is the manipulated variable) for a period of time and see how your weight changes in response.
Answer:
You can use an iodine solution to detect the presence of complex carbohydrates.
Explanation:
The yellow-orange iodine will turn blue-black as it reacts with starch. (The iodine solution will show no reaction with simple carbohydrates or sugars.)
Our lungs.
Hope this helps. c:
Answer:
It wont let me magnify the image srry.
Explanation:
