Some wild animals are primarily monogamous. Swans, for instance, form bonds that last many years, and sometimes for life. , French angelfish live, hunt and travel with their chosen mates and form bonds that often last their entire lifetimes. *
1 point
On the contrary
In addition
Likewise
Suddenly

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there is a sequence and logical steps to give an answer of a trouble.

1) strategy is necessary to develop an project idea.

2) to study and know the environment where you are going to work ( ecosystem).

3)   the materials resources to built the ideas.

4) to give a priority order in the context that you study. in this case human needs.