Which choice is a run-on sentence?

a lion can run faster than a greyhound or a fox.

some tortoises are huge, you can ride on them.

bald eagles build nests of branches; the nest may weigh tons.

humpback whales sing songs; they sing new tunes every year.

Can someone me answer this english question

Which most closely describes the author's use of historical information for the novel white fang? consider both texts provided. the author included details and descriptions of the dogs that match the historical details provided. b) the author changed the historical facts about early sled dogs to fit the needs of his plot and setting. c) the author changed the description and age of the dogs, which was necessary for his main character to develop bonds with the dogs. d) the author included historically accurate details of the dogs' working conditions, but the dogs he describes in his story are alaskan huskies.

What is the literal meaning of alive at the village of round and square houses by ann grifalconi