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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.

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Dysmenorrhea refers to pain or discomfort during menses.<br> a. True<br> b. False
Elanso [62]

Answer: True

Explanation:

Dysmenorrhea can be define as a condition in which pain occurs during menstrual cramps, that is due to uterine contractions.

Primary dysmenorrhea can be define as commonly occurring menstrual cramps. The secondary dysmenorrhea results from a disorder and pain in the reproductive organs.

7 0
2 years ago
10.
bezimeni [28]

Answer:

10A

11A

12A

13B

14A

15B

16A

17c

18A

19C

20c

5 0
2 years ago
The nurse assesses a patient with a heart rate of 42 and a blood pressure of 70/46. what type of hypoxia does the nurse determin
nlexa [21]
<span>The nurse determines this patient is displaying Circulatory hypoxia.Sickle cell anemia can lead to circulatory hypoxia as the cells sickle in the blood vessels and block them. It also produces an anemic hypoxia as the sickled blood cells are removed from circulation.</span>
3 0
3 years ago
In regions of the cardiovascular system where there is steady laminar blood flow, the shear stress on cells lining the walls of
Lynna [10]

Answer:

250 N/m2

Explanation:

Shear stress on cells lining the walls of the blood vessels  is equal to 2020 dyne/cm2

In terms of Newton/square meter, shear stress is equal to

20*\frac{dyne}{cm^2}  (\frac{10^{-5}N}{1 dyne} )*(\frac{1 cm^2}{10^{-4}*m^2} )\\= 2.0 N/m2

Shear modulus is equal to shear stress divided by shear strain

Thus, shear modulus is equal to

= \frac{2.0}{0.008} \\= 250N/m2

7 0
3 years ago
Observe Record the appearance (colors,
pshichka [43]

Answer:

Oxygen, air, oxygen from the air, oxygen from air and the second part is synthesis

Explanation:

Got it on edge

6 0
3 years ago
Read 2 more answers
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