1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bond [772]
3 years ago
15

1. Why is it difficult to evaluate thresholds for toxic pollutants? a. Synergistic effects are difficult to account for. b. Ther

e is not enough research on the consequences of multiple exposures. c. Lack of knowledge on the effect of possible interactions of mutiple toxins. d. All of the above
Biology
1 answer:
qaws [65]3 years ago
7 0
The options are all related, and the answer is D) All of the Above. 

The synergistic effects of exposure to multiple toxins are more difficult to quantify and study. As a result, there is not sufficient research on how much a system can take when exposed to multiple pollutants. This lack of research also means that we often do not even know what the effect of these interactions between multiple toxins are.

As a result of these gaps in our knowledge of the interactions between toxins, it is difficult to evaluate the threshold for pollutants, since a system will rarely feature only one pollutant in isolation. 
You might be interested in
A huge amount of water − 7 to 9 l − moves from the blood into the bowel every day, through osmosis and digestive secretions. sin
Alexus [3.1K]
The event order should be:

1. Ingesting food, the small bowel filled with food solutes and become hypertonic. It will attract water from the blood which is hypotonic
2. Food digested, some of it absorbed. The osmotic pressure inside bowel will be reduced.
3. All food is absorbed, the osmotic pressure reduced significantly makes it hypotonic. The blood attracts water as it is hypertonic. This will increase the blood volume
7 0
2 years ago
humans have one of four blood types: A,B, AB, or O. Explain what determines a persons blood type. What antigens are on the blood
Bumek [7]

Answer:

if you find this helpful, Mark brainliest

3 0
3 years ago
High pressure brings clear, sunny skies, and calm weather. It is represented by H on
arsen [322]
True i hope it’s right :)
6 0
3 years ago
Read 2 more answers
What is the function of the respiratory system?
ratelena [41]
Correct answer is 2 - To breathe
5 0
3 years ago
The term "grandmother cell" refers to a neuron that
erica [24]
It is a hypothetical neuron that can be shown to represent a specific psychological concept. this cell becomes active every time someone thinks about a complex thing.
4 0
3 years ago
Other questions:
  • When the mouth develops from the first opening in the gastrula, the organism is called a deuterostome.
    8·1 answer
  • Mountains are gradually blank through the actions of weathering and erosion
    7·1 answer
  • Jr. Scientist has discovered a new restriction endonuclease. She knows that it has an eight-base recognition sequence (PALINDROM
    6·1 answer
  • The rods are responsible for whereas the cones are responsible for
    8·1 answer
  • NC State is a community that is strong because of the diversity of our perspectives and experiences. Please describe how you cou
    13·1 answer
  • 3.88 milligrams is equal to how many centigrams?
    9·2 answers
  • Harriet is feeling great about her life. In the last few days, she made some new friends at school, she started to eat healthier
    5·1 answer
  • Which term best describes any organism that lives on or in another living organism and takes nutrients from that organism withou
    7·1 answer
  • Which equation is most likely used to determine the acceleration from a velocity vs time graph?
    5·2 answers
  • In angiosperm double fertilization, one sperm nucleus fertilizes the ______ to form the diploid ______, and a second sperm nucle
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!