Trees help the environment, they make oxygen from carbon dioxide. We should plant more because we are constantly chopping down trees to get wood, and planting more helps to ensure that will we will have trees in the future.
Answer:
<h2><em><u>Option</u></em><em><u> </u></em><em><u>B</u></em></h2>
Explanation:
A RCB (red blood cell) present in human beings does not have a cell wall, only plants have cell wall.
<em><u>Here</u></em><em><u>,</u></em>
The RCB has,
Cell wall - absent
Nucleus - present
<em><u>Op</u></em><em><u>t</u></em><em><u>i</u></em><em><u>on</u></em><em><u> </u></em><em><u>B</u></em>
Answer:
Structure and function of the cell membrane
The cell membrane is semipermeable (or selectively permeable). ... The unique structure of the cell membrane allows small substances (like oxygen or carbon dioxide) to easily pass through.
Explanation:
Cancer or any number of other genetic mutations like diabetes, birth defects, etc.