Scientists believe that over millions of years lungfish changed to become the first amphibians. what evidence do scientists use to support this idea?

a.)the shape of rock formations
b.)direct observation
c.)fossil evidence
d.)data collected by early humans

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

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle

Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal