<span>runs east of the Red River of the North, cuts through Lake Winnipeg theres also one more reason i just dont remember it if you really want to know the last reason il get out my geo book n search it up k just message or most comany known as comment on this answer and il gladly find out the other reason</span>
The answer that fits the blank is the term CHANCE. There would always be variability between the groups because of the variability of the given samples and how these samples are being treated in the first place. This is when chances enter.
Nelson Mandela was born in July 18, 1918
