1. What are strata? 2. Where are the oldest fossils based on Steno’s ideas?

3. Geologists were unable to compare rocks from one location to another. William Smith figured out how to match the ages of layers of rock by comparing within the layers.

One gene can influence trait(s). one trait can be determined by gene(s).

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

The green colored pigment in chloroplasts is? a. nitrogen b. chlorophyll c. chlorophorm d. chlorofloromethane