Continental waters are classified into two categories Lentic and Lotic. A Lotic Ecosystem has flowing waters, such as creeks,
streams, rivers, springs, brooks and channels. A Lentic Ecosystem has still waters such as; ponds, marshes, ditches, reservoirs,
and lakes. The ecosystem of Lentic and Lotic waters includes biotic (living) interactions between plants, animals and micro-
organisms, and abiotic (nonliving) physical and chemical interactions.

Identify a key nonliving component of a Lentic ecosystem.

NEED HELP ASAP

A. algae

B. bacteria

C. fish

D. wind

the answer for sodium is 0.186

the answer for rubidium is 0.251

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.