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Cloud [144]
3 years ago
11

Ddt was banned from use as a pesticide in the united states because

Biology
2 answers:
mixas84 [53]3 years ago
5 0
The answer is D. All of the above . Hope this helps!
netineya [11]3 years ago
3 0
The answer to your question should be D. all of the above
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When farmers leave plant stalks in the field to reduce soil erosion, it is called ____. a. contour farming c. no-till farming b.
aleksklad [387]

Answer:

Option (C)

Explanation:

In no-till farming method, the farmer usually uses a no-till planter with the help of which they make a narrow type of trench that is sufficient enough for the seed to be grown in rows. The residue of the cover crop is allowed to place on the surface of the soil by not plowing, as a result of which the soil is protected from getting eroded and losing of moisture content. This improves soil quality.

This method helps in increasing the water content that percolates down into the soil, holding the organic matter and recycling of nutrient matters. It also expands the growth and population of microbes in the soil, which provides more nutrients to the soil and increases the fertility of the soil.

Thus, when a farmer leaves plant stalks in the field to reduce soil erosion, then it is known as no-till farming.

Hence, the correct answer is option (C).

5 0
3 years ago
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How many inches makes a cm
GalinKa [24]
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The respiratory rate times the tidal volume corrected for the dead air space in the lungs is the __________.
pav-90 [236]

Answer:

d. alveolar ventilation rate

Explanation:

Alveolar Ventilation rate (AVR) refers to the rate of airflow that reaches the alveoli which is available for gas exchange with the blood in a given unit of time. AVR is generally calculated as the amount in millimeters of air expired that equilibrates (i.e., exchanges) with alveolar gas per min unit (ml/min). AVR is affected by breathing frequency, tidal volume ( i.e., the normal amount of air between inhalation and exhalation), and the amount of dead space in the lungs.

7 0
3 years ago
Definitions
shusha [124]

Answer:

Explanation:

1. Organ

2. Nervous tissue

3. B

4. Tissue

5. Lungs?

6. D

7. C

8. A

9. F

10. E

11. G

12. ?

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they must focus on it instead of focusing on useless information

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