Salt concentration is the factor among the following factors given in the question that does not vary between a fast flowing river and a pond that receives no water input. The correct option among all the options that are given in the question is the second option. I hope the answer comes to your help.
Stewardship is taking care of something like a large household, the arrangements for a group or the resources of a community. An example of stewardship is the responsibility of managing the staff of an estate. An example of stewardship is the act of making wise use of the natural resources provided by the earth.
Answer:
It should be letter D hope it helps
Answer:
a mineral is scraped or rubbed hardly on sandpaper or unglazed porcelain
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