Which structure in plants produces a substance that protects the extending roots from developing friction?

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates