Answer:
B cell membranes protect a cell,and cell walls do not
Coal creates a negative impact on the environment because it contains sulfur and other harmful elements. When you burn coal these elements are then released into the air. And it can cause air pollution and health dangers as it releases a lot of carbon dioxide.
Answer:
The scientist tested one variable to determine what caused the number of leaves to change.
Explanation:
The brown paper test for lipids is positive when food is placed on the paper and a spot forms that will allow light to pass through it. Which food would give the strongest positive test for lipids? The answer is The brown paper test for lipids is positive when food is placed on the paper and a spot forms that will allow light to pass through it. Which food would give the strongest positive test for lipids? The answer is Potato chips
<span>1. is exothermic
2. is current electricity
3. is static electricity
4. is outer ear
5. is compression</span>
