Professor Huosheng Hu's fish robots can swim around on their own. No one has to control them. Hu hopes to put some of the robots into the ocean. Like the other robots, the fish will have a job. They will look for pollution, like oil leaks from ships. Then people can come and clean the dirty water. The robots will ___ pollution .

locate
avoid
remove
trap

Which two passages in this excerpt from the death of ivan illych does leo tolstoy use to suggest that ivan ilych feels like his life is slipping away from him? "what's the use? it makes no difference," he said to himself, staring with wide-open eyes into the darkness. "death. yes, death. and none of them knows or wishes to know it, and they have no pity for me. now they are playing." (he heard through the door the distant sound of a song and its accompaniment.) "it's all the same to them, but they will die too! fools! i first, and they later, but it will be the same for them. and now they are merry . . the beasts! " anger choked him and he was agonizingly, unbearably miserable. "it is impossible that all men have been doomed to suffer this awful horror! " he raised himself. "something must be wrong. i must calm myself—must think it all over from the beginning." and he again began thinking. "yes, the beginning of my illness: i knocked my side, but i was still quite well that day and the next. it hurt a little, then rather more. i saw the doctors, then followed despondency and anguish, more doctors, and i drew nearer to the abyss. my strength grew less and i kept coming nearer and nearer, and now i have wasted away and there is no light in my eyes.

The overwhelming majority of the peoples and nations of the world today want to live in peace

Read the excerpt from rena's promise: two sisters in auschwitz. “i have a favor to ask of you, andrzej . . this is very difficult for me, but i must ask. it is no longer safe in tylicz for rena. her mother and i are worried for her safety every day.” “i heard what happened last night, mr. kornreich. i understand your concern.” “i have no money to pay you for this favor.” “sir, i would not take any money from you. she is my friend since childhood. i will do whatever you ask to your daughter.” “ you.” papa paused, stroking his chin where his beard should have been. “you seem like a man of your word. if you would bring rena across the border to slovakia, her mother and i might find sleep at night.” which best summarizes the excerpt? although he does not trust andrzej, rena’s father fears for his daughter’s life and finally agrees to leave her with him. slovakia is the only safe place for the jews of europe, and andrzej has agreed to take rena there. rena’s father asks andrzej to take her to safety in slovakia, and he agrees to do so. after much deliberation, rena’s father pays a polish man to take her safely across the border to slovakia. mark this and return