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
Andrei [34K]
2 years ago
15

How did the banned substances DDT and PCBs end up in the ocean?

Biology
1 answer:
lbvjy [14]2 years ago
5 0

Answer:

PCBs and DDT are chemicals that were banned more than 30 years ago, but our air, water, land, and bodies are so contaminated that decades of cleanup efforts have yet to eliminate their threats to our health. Today, food is one of the most likely exposure routes to PCBs.

You might be interested in
What role does a transcription factor play in a signal transduction pathway and why?
NeTakaya
By binding to DNA it triggers the transcription of a specific  gene.
4 0
3 years ago
A luminosidade da estrada deve depender da constelação na qual está
Sveta_85 [38]

Answer:

....................

6 0
3 years ago
A nurse is caring for a client with the diagnosis of schizophrenia. during assessment the nurse identifies both positive (type i
aleksandr82 [10.1K]
There is no options to select
3 0
3 years ago
Why does DNA replication occur?
Alinara [238K]

Answer:

So that each cell has all of the information.

Explanation:

Please brainliest!

3 0
2 years ago
Read 2 more answers
During the Devonian period of Gondwanaland what were the two organisms that thrived?
gulaghasi [49]

Answer:

about the Trilobites is =Trilobites ( /ˈtraɪləˌbaɪt, ˈtrɪ-, -loʊ-/;[4][5] meaning "three lobes") are a group of extinct marine artiopodan arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (521 million years ago), and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 300 million years.[6] . and about the algae is =Algae (/ˈældʒi, ˈælɡi/; singular alga /ˈælɡə/) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to 50 metres (160 ft) in length. Most are aquatic and autotrophic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem, which are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of green algae which includes, for example, Spirogyra and stoneworts.

Explanation:

5 0
2 years ago
Other questions:
  • We need lots of energy to do the things we want to do: keep our houses warm, drive cars, run computers, grow and harvest food. T
    15·1 answer
  • What would be the outcome of a unicellular arganism that cannot maintain homeostasis
    8·1 answer
  • Where is glucose made
    15·1 answer
  • Which statement accurately describes reproduction in animals?
    13·1 answer
  • A student is developing a model that shows the steps of protein synthesis. The model should include activities in which three st
    9·2 answers
  • Distinguish between a monohybrid cross and a testcross.
    11·1 answer
  • In humans, oculocutaneous (OCA) albinism is a collection of autosomal recessive disorders characterized by an absence of the pig
    11·2 answers
  • I need help please!
    6·1 answer
  • WILL GIVE BRAINIEST IF THEY GIVE A CORRECT ANSWER!!! 50 POINTS!!!!<br> what eats sunbeam snakes?
    9·2 answers
  • To give birth to her infant, a woman is asked to push with contractions. which pushing technique is the most effective and safes
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!