I don't know exactly what you mean but the size of a group affects its defense because there is a larger group. Therefore, more people would be protecting it, adding more to its defense.
<span>The circulatory system is vital in the exchange of oxygen with the cells in the animal's body because there is no living creature that can survive without oxygen, it keeps the body active.
</span>♡♡Hope I helped!!! :)♡♡
The answer is b. plant structures.
Photosynthesis is the process by which plants use solar energy to produce glucose from carbon dioxide and water. Carbon dioxide enters the leaves, plant structures, through the<span> stoma and is incorporated into organic compounds. </span>
Factories, cars and cigoretes.
All of these things are polluting the air cuasing it to heat up more which is cuasing global warming
