Q: Fact: a squid produces thrust by pushing water out of its body
Question: In saltwater, a squid's method of locomotion results in water being

A: displaced directly behind it

Q: Fact: scraping an object may cause small particles to break off of that object
Question: Oak tree seeds are planted and a sidewalk is paved right next to that spot, until eventually, the tree is tall and the roots must extend past the sidewalk, which means

A: parts may break the concrete

Q: Fact: an animal requires nutrients to grow and heal
Question: What requires nutrients to grow and heal?

A: birds

Q: Fact: thick feathers can be used for keeping warm
Question: A bird such as a penguin can survive in arctic weather due to

A:
feathers