subject
Biology, 20.07.2019 21:30 stephany94

Which of the following demonstrate the environmental advantages of secondary and tertiary treatment of wastewater? a) secondary treatment lowers the bod of wastewater making is safe to return to the environment. b) tertiary treatment removes excess nutrients such as nitrogen and phosphorus which can cause algae growth. c) disinfection is used to kill disease-carrying bacteria. d) all of these.

ansver
Answers: 1

Other questions on the subject: Biology

image
Biology, 21.06.2019 22:00, samantha636
According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..
Answers: 1
image
Biology, 22.06.2019 01:30, aaliyahlopez85
How do you date a sample of rock that you suspect as being one of the earliest on earth
Answers: 1
image
Biology, 22.06.2019 09:30, lilyrockstarmag
Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?
Answers: 2
image
Biology, 22.06.2019 12:20, Yumimiku6539
Which organ controls breathing? lungs alveoli heart diaphragm
Answers: 2
You know the right answer?
Which of the following demonstrate the environmental advantages of secondary and tertiary treatment...

Questions in other subjects:

Konu
Mathematics, 27.10.2020 17:10
Konu
Mathematics, 27.10.2020 17:10
Konu
History, 27.10.2020 17:10