Answer:
<h2>Science:</h2>
the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
Human population does not yet amount to 8 billion people - the correct answer is D! Currently the population is 7.4 billion and it's predicted to be around 8 billion between 2020 and 2025
All the other statements are true, for example we are expecting serious droughts soon.
A should be correct sorry if wrong
They both wanted independence from their mother countries.