TRUE OR FALSE. (Marine Biology, FLVS) 22. Estuaries are partially enclosed bodies of water where salt water from the ocean mixes with fresh water from rivers and streams (brackish water). 23. Estuaries have some of the highest abundance of organisms of all of the ecosystems in the world. 24. Estuaries have very deep waters. 25. Estuaries provide food, shelter and nursery grounds for animals. 26. Estuaries tend to have low amounts of nutrients in their waters. 27. Estuaries are called the “cradle of the ocean.” 28. Estuaries are part of the intertidal zone. 29. Estuaries are stable environments in terms of tides, salinity and temperature.

the answer is d (apex) good luck : ))

the glands which are associated with each description is given below:

it provides an alternative energy pathway for the reaction to proceed.

a catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.

catalysts increase the rate of reaction without being used up. they do this by lowering the activation energy needed. with a catalyst, more collisions result in a reaction, so the rate of reaction increases. different reactions need different catalysts.

a catalyst works by providing an alternative reaction pathway to the reaction product. the rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst.