The correct answer is 30:(
Answer:
Dry air is a mechanical mixture of nitrogen, oxygen, argon and several other gases in minor amounts.
Explanation:
Answer:
Examples of where primary succession may take place include the formation of new islands, on new volcanic rock, and on land formed from glacial retreats.
B is the correct answer sir
<span>What is the most likely effect that a war might have a food security?
A. Crops would be burned and convoys attacked to deny food sources to the enemy
During war time, everything is done to ensure victory. Food and water of the enemies are either confiscated or burned down. Enemies will be starving and dehydrated making them susceptible to sickness or death. Decreasing there numbers and making it easier to defeat them in battle. </span>
