20 points!

during a pet scan, a man is told to wiggle his toes. when he does this, a strip of brain tissue becomes brighter on the screen. this strips runs down the side of the brain, about halfway between the front of back.

what does this tell you about the area of the brain used for toe movement?

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?