Billy thinks evolution is slow and continuous. he believes in gradualism, punctuated equilibrium, or convergent evolution.

terrestrial level - terrene position

potentially - possible/likely

dangerous tasks - treacherous assignment

specifically - exactly/precisely

disabilities - impairment/ailment

to boost - push/lift/raise

artificial intelligence - robot/ ai/machine

enemies - terrorist/opponent/competitor

scientific endeavors - experimental intent

valuable - expensive/priceless

result - outcome/product

hope this !

~just a girl in love with shawn mendes

halibut, flounder, tuna, and trout are all fish. so your first answer is 1.) fish. and since fish is edible, your next answer would be 3). edible

to describe those fishes more thoroughly, some of those fishes live in fresh water, and some of the fishes live in salt water, and that is not a thing that they all have in common. the question is asking what is common with all of the fish, so answer choices 2). fresh water and 4). salt water are not right.