What are the Vaccine given at Health center? a. Identify the given vaccine whether it is weakened, live, killed or toxoid.
b. what are the pathogen could be protected by each type of vaccine?​

What kind of action is a cause of air pollution

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.

This is a coral reef ecosystem. many biotic and abiotic factors affect the health of this ecosystem. which set correctly pairs a biotic factor and an abiotic factor?