PLEASE HELP ASAP! The human population has increased drastically in the last few centuries. What is the best reason why scientists may be concerned?

A) There will not be enough space for people to live if more people are born.

B) There will not be enough air for people to breathe if more people are born.

C) The human population will exceed Earth's carrying capacity.

D) Scientists are not really concerned about this.

the answer is c

im pretty sure its A

i think the life is invaluable.

you can also say immeasurable.

the purpose of the heading in the passage is to identify who is telling the story.

this excerpt is part of the book sugar changed the world (2010) written by marc aronson and marina budhos. as the book has been written by two people, the heading "marc" indicates that this specific excerpt is being narrated by aronson. in the fragment, marc describes his grandfather's story after hearing it from his cousin. however, there are other excerpts where budhos is the one that tells the story of her family.

aronson and budhos, who are husband and wife in real life, decided to write sugar changed the world when they found out how sugar, which had an important role in slavery and economy, changed their ancestors' lives.