Answer:
B. Malthus, who thought that populations could outgrow their food sources
Explanation:
Answer:
Gravity.
Explanation:
Without air, living organisms would suffocate and die.
Without water, living organisms would dehydrate and die.
Without energy, living organisms would die instantly.
Without space, living organisms would be squished together and die.
The only logical answer left is gravity.
Answer:
A sphere full of air
Explanation:
because you pump it up and it is very fun to use