What is represented in the geologic time scale? Question 19 options:

a. fossil formation in sedimentary rock

b. steps of endosymbiosis

c. major geological and biological events in Earth’s history

d. current plant and animal groupings

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 function does a limb serve in each animal how are the limb bones of the four animal similar based on the similarities what can be inferred about the evolution of the poor animals

The activity of the modern sample is 1.10 bq . how long does that measurement take?