Environmental Science

4. an opaque disk, typically white, used to gauge the transparency of water by measuring the depth
6. a meeting of people face to face, especially for consultation
8. scientific instrument that measures the hydrogen-ion activity in water-based solutions
9. something to use to sift through vegetation
10. Relating to a type of circumstance or event that is described by a probability distribution
12. a covered pit used as a trap
14. an instrument for measuring the intensity of light, used chiefly to show the correct exposure when taking a photograph
16. portable instruments, probes, and sensors used to measure dissolved oxygen in water and other solutions
17. catching a small number of individuals, putting a mark on them, and releasing them
18. A method of sampling a geographical area by selecting points in it
19. a set of printed or written questions with a choice of answers, devised for the purposes of a survey or statistical study

1. characterized using order and planning
2. trap with or without ultraviolet light used to attract insects
3. frame quadrat- a specific small surface area without grids
5. widely used method for sampling invertebrates living on the bed or stream of a river
7. quadrat- a specific small area with grids, creating more accuracy
11. monitoring water quality in a range of applications that includes drinking water, as well as in lakes, rivers, and mangroves
13. a path along which one counts and records occurrences of the objects of study
15. a pale-colored cloth that is usually stretched out using a frame