A blockage in a blood vessel leading to the brain may cause an area of the brain to stop working and die. Which term is used to describe this condition? A) stroke B) heart attack C) arteriosclerosis D) electrocardiogram

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

Several billion years ago which gas was the least prevailant in the atmosphere