Answer:
The reproductive system.
Explanation:
Without the reproductive system, humans are not able to reproduce meaning the human species would go extinct. With the reproductive system, humans are able to create more humans, in this way humans do not go extinct.
study suggests that photosynthetic eukaryotes may have emerged around 1.9 billion years ago in freshwater habitats. Eukaryotes are thought to have evolved the capacity for photosynthesis through a process called endosymbiosis, in which a protist host encapsulated a photosynthetic cyanobacterium.
"Founder effect" is the one factor among the choices given in the question that is responsible for this phenomenon. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that has actually come to your great help.
If you need help creating this assignment you could write it kind of like this (Note, I can't do the whole assignment, but I can give you an example):
Make sure you first do an introduction before beginning: Hello! I'm a water molecule, and you are about to go on an incredible journey that my friends and I do all the time!
Make sure it's in order:
You don't want to go from evaporation to another cycle that isn't next! Like, say there are three people in line and you're introducing them, you wouldn't skip over someone!
Of course, make sure your spelling, grammar, and punctuation is correct (Grammarly is a great checker for this)
And: Act like you ARE a water molecule! Make it sound real and exciting! Don't just say "This is evaporation, where water is taken from blah blah blah..." say it excitingly like "And now we are at the next part of our crazy journey! This is evaporation! What happens here is so cool..." ext...
Hope this helps you!!!