In october of 2003, a raging wildfire swept through the mountain ecosystems in southern california, burning everything in its path to the ground and driving away all of the animals. in order for the mountain ecosystem to re-establish itself, which member of the food web has to return first? a. deer b. snakes c. birds d. coyotes e. grasses

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

What problem would a person most likely have if her kidney did not work correctly?

Agroup of organisms that changes over time is said to