Identify the type of chemical reaction. h2so4 + 2kohk2so4 + 2h2o

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?

What is the process of pulling apart an n2 molecule nevermind i got it

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above