What can be used to determine the relative age of two rocks? a .vertical position
b. radioactive dating of each layer
c. relative age cannot be determined

The study of interaction between living organisms and their enviroment is called (a) phytogeography (b) ecology (c) phytosociology (d) ecosystem

Read the sentence. “yesterday we arrived late for the outdoor concert in the city gardens.” which words in the sentence are adverbs? a. late; city b. yesterday; outdoor c. yesterday; late d. outdoor; city

Select the correct answer from each drop-down menu proteins are