« previous next »

Author Question: Magnesium is the element that appears in the second group of the second period. Indicate whether ... (Read 40 times)

nevelica

  • Hero Member
  • *****
  • Posts: 563
on: Aug 27, 2018
Magnesium is the element that appears in the second group of the second period.
 
  Indicate whether the statement is true or false

Question 2

Phosphates were once a common component of laundry detergents because they soften water. Why has their use been restricted?
 
  A) The phosphates are poisonous to plants.
  B) The phosphates are plant nutrients that lead to excess algae growth.
  C) The phosphates were getting into human drinking supplies.
  D) The phosphates diminished the supply of calcium found in cow's milk.


alvinum

  • Sr. Member
  • ****
  • Posts: 317
Reply #1 on: Aug 27, 2018
Answer to Question 1

FALSE

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Curative Factors of Group Therapy Curative Factors of Group Therapy
Group Project Meme Group Project Meme
Embryonic Period Embryonic Period
A group of children were asked how many hours a day they spend watching television. A group of children were asked how many hours a day they spend watching television.
Cis-element regulatory structures in eukaryotes Cis-element regulatory structures in eukaryotes
Video: Methods that regulate pH

For a complete list of videos, visit our video library