Read the paragraph about carbohydrates. it seems as if every modern diet plan includes an elimination of carbohydrates from one’s diet. "carbs” are being shunned as everyone seeks out "low-carb” foods and diets. but not every carbohydrate is a cookie; not every "carb” should be rejected. consider a healthy bowl of pasta and vegetables before a swim or a run. pasta can provide athletes with energy and a feeling of fullness and satisfaction that might not come from vegetables alone.
what is the controlling idea?
many people seeking to lose weight eliminate carbohydrates from their diets.
carbohydrates’ bad reputation ignores the benefits they can offer.
there are many dishes that pair healthy vegetables with pasta.
athletes must increase their carbohydrate intake to improve performance.

in ray bradbury's short story "a sound of thunder", mr. eckels's fearfulness leads to drastic consequences for the rest of the world.

in the story, mr. eckels, who is a hunter, hires a time travel company to travel to the age of dinosaurs. although he is excited for the hunting expedition at the beginning, when they reach there and mr. eckels sees the tyrannosaurus, he feels frightened. as he is afraid of the tyrannosaurus, he steps off the path although he has been warned not to do it. by stepping off the path, the entire course of the future is affected: mr. eckart alters the future by stepping on a butterfly, which causes a new man to be elected president in the future. in that way, it is mr. eckart's fearfulness what triggers 'the butterfly effect' and what leads to drastic consequences for the rest of the world.

this is hard!