« previous next »

Author Question: Which of the following statements about biodegradable polymers is true? A) They will degrade ... (Read 133 times)

sam.t96

  • Hero Member
  • *****
  • Posts: 570
on: Aug 27, 2018
Which of the following statements about biodegradable polymers is true?
 
  A) They will degrade quickly in a landfill.
  B) Thermosetting polymers are biodegradable, but thermoplastics are not.
  C) They often require specific temperatures or the presence of microorganisms in order to undergo degradation.
  D) Polyvinyl chloride is a biodegradable polymer.

Question 2

The fact that a heat pump requires energy to move heat from a colder object (the outside of a house) to a hotter object (the inside of the house) is a real life observation of which thermodynamic law?
 
  A) the first law
  B) the second law
  C) the third law
  D) the fourth law


BUTTHOL369

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Aug 27, 2018
Answer to Question 1

C

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

A true albino squirrel. Note the pink eyes. A true albino squirrel. Note the pink eyes.
Apparent and True Orbits of Alpha Centauri. Apparent and True Orbits of Alpha Centauri.
True Forget-Me-Not True Forget-Me-Not
How to convert verbal statements into algebraic equations (Part 1) How to convert verbal statements into algebraic equations (Part 1)
How to convert verbal statements into algebraic equations (Part 3) How to convert verbal statements into algebraic equations (Part 3)
Video: Type of Cell Junctions - Desmosome, Hemidesmosomes and Gap Junctions

For a complete list of videos, visit our video library