Answer:
B!
Explanation: hope this helps
Is called an estuary this mostly common with rivers and oceans.
Answer:
Male baboons eavesdrop on mating couples to determine the status of their relationships, scientists show. Mating chacma baboons produce an incredible amount of noise; males grunt and females emit loud and long operatic calls. This is because higher-ranked, more dominant males otherwise monopolize high-ranked females.
Explanation:
During an experiment the factors we observe are
1) what reactions are taking place(if any)
2) is there a change in the colour of the substances used
and so on. Observation totally depends on the experiment
the things we measure are weight, mass, time, temperature,etc.
hope it helps u