based on the description of the swing in paragraph 3 ("but on that . . . it"), which two conclusions can be drawn about the swing?

Your question is incomplete. I would give you a general overview that should help you get the answer.

In order to come to a logical conclusion based on the description of something, it is important to:

Take note of the central idea Take note of the claims made and supporting details as they validate the claim. Make use of inference/deductions in a logical manner Therefore, as you are asked to make two conclusions based on the details given about the swing, then follow the details given above.

Loss in amenity , biodiversity , which are most difficult to assess

The paced decision model is a tool that can be used in a variety of situationsit should clarify one's alternative and criteriapaced decision-making processused to solve problems in a rational, systematic way- state the problem- list the alternatives- identify criteria- evaluate alternatives- make a decisionstep 1 - problem: the first step is to state the problem. what car should i buy? step 2 - alternatives: list some likely alternativesstep 3 - criteria: the next step is to establish criteria - what is the most important to you. (these criteria need to be state din positive terms, i.e., stated as you what you want.) ex costs less than $4000; gets at least 25 mpg,; seats at least 4; has ac;   step 4 - evaluate each alternative by comparing it to criterion. if an alternative meets a criterion, pus a + in that box - if not put a -. at the end look to see which alternative meets your most important criteria. (some criteria will be more important than others. those may be given greater weight. and, if an alternative costs more than $4000, it probably won't matter if there is a + in all the other boxes.)step 5 - decide: based on the insights gained, make a choice. be sure to explain that it won't always be the one with the most +'s - since some criteria count more than othersthe strength of this tool lies in the ability of each student to determine their own criteria for evaluation