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
dusya [7]
3 years ago
8

Which chemical is LEAST persistent in

Biology
1 answer:
dalvyx [7]3 years ago
5 0

Answer:

D. DDT

Explanation:

DDT is highly persistent in the environment means that it break down very slowly in the environment. The half-life for DDT is from 2 to 15 years. Half-life is the time needed for the degradation of half of the compound. Persistent bio-accumulative toxic substances (PBTs) are chemicals that break down slowly in the environment and its accumulation in living organisms are toxic. Some PBTs are dispersed through air currents while some uses other environmental pathways, resulting in contamination of regions far from their points of origin.

You might be interested in
Explain the aerobic respiration needs oxygen.​
Contact [7]
Definition. Aerobic respiration is the process by which oxygen-breathing creatures turn fuel, such as fats and sugars, into energy. ... The product of respiration is a molecule called ATP, which can easily use the energy stored in its phosphate bonds to power chemical reactions the cell needs to survive ...
7 0
4 years ago
A general mechanism noted in thrombocytopenia is which of the following? (Select all that apply.) Decreased platelet production
joja [24]

Answer:

decrease in platelet production

8 0
3 years ago
What do ligaments hold together in a joint?
galben [10]
Ligaments<span> - a tough band of tissue that holds the ends of bones </span>together<span> at a </span>joint Joints<span> - where two or more bones meet </span>together<span> Tendons - cords of connective tissue that attach muscle to bone Muscles and tendons attach to bones on either side of a </span>joint<span>, </span>holding<span> the bone(s) </span>together<span> tightly In the human body</span>
7 0
3 years ago
Read 2 more answers
NEED ASAP WILL GIVE 25 POINTS
expeople1 [14]
1. Plants have chlorophyll, a green pigment necessary for photosynthesis
2. Their cell walls are made sturdy by a material called cellulose
3. They are fixed in one place (they don’t move)
7 0
2 years ago
Read 2 more answers
Why​ ​does​ ​Earth​ ​have​ ​fewer​ ​impact​ ​craters​ ​than​ ​other​ ​planets?​ ​Explain​ ​at​ ​least​ ​four​ ​reasons!
aev [14]

Answer:

The process of erosion uses weather, water, and plants to break down the ground on earth so that craters become virtually nothing. ... The Earth's gravity is stronger than the moon's, so it attracts more space debris than the moon does.

Primarily because earths' atmosphere disintegrates many meteorites before they reach the Earth. Secondarily because earth's more active tectonic motions delete them

Explanation:

8 0
3 years ago
Other questions:
  • Question 2
    14·2 answers
  • Peptidoglycan is a polymer of millions of N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) sugars based on glucose molec
    14·1 answer
  • The reactivity of an atom is due to the number and arrangement of _______ in the outer energy level.
    13·2 answers
  • Muscles account for what percentage of one's body weight?
    10·1 answer
  • Why do plant cells have mitochondrion?
    12·1 answer
  • Which substance is considered a building block for all living things?
    8·2 answers
  • How does the mantle interact with the crust at a subduction zone? A. Plates move apart to form deep cracks in the crust. B. Plat
    10·2 answers
  • The temperature deciduos forest and temperature grassland biomes have the same maximum temperature. Witch of the following is a
    11·1 answer
  • What are the answers pls
    10·2 answers
  • When an animal cell goes through the process of mitosis, it divides into two smaller cells.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!