Agroup of seaside sparrows competing for food, nesting space, and mates in a salt marsh is an example of the level of environmental organization.

The answer is population.

Explanation:

This is the second level of environmental organisation, just above the individual level, which comprises every living organism by itself. The next level concerns the population of a species living in a determined area. In the passage, the example is a group of seaside sparrows.

your answer would b. the missisipi river

hope i you : )

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.