Water Quality B/C

[SilverBreeze]

I don't know whether a Water Quality question marathon already exists, but here goes nothing:

Name the stages of potable water treatment, in order.

[Scrambledeggs]

I don't know whether a Water Quality question marathon already exists, but here goes nothing:

Name the stages of potable water treatment, in order.

Intake/collection, chemical addition, sedimentation, coagulation and flocculation, disinfection, and finally filtration

[SilverBreeze]

I believe sedimentation and coagulation/flocculation might be switched? Otherwise, all correct, just remember to use spoilers next time. Your turn!

Spoilers are in the menu of buttons at the top when posting, and can also be inserted like this: [ spoiler ]<answer in here without spaces inside the brackets>[ /spoiler ]

[Scrambledeggs]

1) Describe the difference between Homiohaline and polyhaline

2) What is a buffer?

3)Briefly describe the life cycle of a coral polyps

[SilverBreeze]

Here are my best answers: 1. homiohaline refers to estuaries with relatively constant gradients, where as poikilohaline(is that what you meant? Google tells polyhaline is the most saline type of water still considered brackish, but it could just be me being inane) refers to estuaries with more variable salinity gradients.
2. A buffer is a solution of a weak acid and its conjugate base that keep the pH of a solution from changing when acids/bases are added.
3. Sperm and eggs are released in broadcast spawning. A planula larva is formed. It settles(is recruited) somewhere and is fixed permanently. It asexually reproduces to form a colony.

[Scrambledeggs]

Here are my best answers: 1. homiohaline refers to estuaries with relatively constant gradients, where as poikilohaline(is that what you meant? Google tells polyhaline is the most saline type of water still considered brackish, but it could just be me being inane) refers to estuaries with more variable salinity gradients.
2. A buffer is a solution of a weak acid and its conjugate base that keep the pH of a solution from changing when acids/bases are added.
3. Sperm and eggs are released in broadcast spawning. A planula larva is formed. It settles(is recruited) somewhere and is fixed permanently. It asexually reproduces to form a colony.

Yeah for #1 it seems correct, my notes just say that homiohaline basically just means constant salinity within an estuary, while polyhaline is changing salinities within an estuary. Based off google, it seems your answer seems more correct? #3 is mostly correct, just remember that they can also reproduce sexually.

[SilverBreeze]

Thanks!
1. How much energy is lost between trophic levels?
2. Which nutrient cycle does not involve the atmosphere as a significant reservoir?
3. Why do we monitor fecal coliform and not pathogens?

[IHateClouds]

SilverBreeze said:
Thanks!
1. How much energy is lost between trophic levels?
2. Which nutrient cycle does not involve the atmosphere as a significant reservoir?
3. Why do we monitor fecal coliform and not pathogens?

1. 90%
2. phosphorus
3. not really sure but i think because fecal coliform is found in higher amounts

[SilverBreeze]

All correct. On #3, more specifically it is because pathogens are found in too small a number to monitor easily. Your turn!

[IHateClouds]

1. What is the relationship between crown of thorns starfish and tritons?
2. Where are there increased crown of thorns starfish outbreaks?
3. What type of food does the crown of thorns starfish consume?