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miskamm [114]
3 years ago
9

How does the use of fertilizer affect the nutrogen cycle?​

Physics
1 answer:
True [87]3 years ago
4 0
Fertilizer puts nitrogen into the soil, so using fertilizer puts more nitrogen into the carbon cycle. When you use fertilizer, its because a certain plant you are planting uses all the nitrogen in the soil, so it won't grow next time. Too much fertilizer, though, would burn up your plant. (got the answer from google so if it’s wrong, i’m sorry)
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3 years ago
How much heat energy (in megajoules) is needed to convert 7 kg of ice at -9°C C to water at 0°C?
Molodets [167]

Answer:

hence option A is correct

Explanation:

heat required from -9°C to 0°C ice = mass × specific heat of ice ×change in temperature

heat required from -9°C to 0°C ice = 7×2100×9 =132300 J =0.1323 MJ

( HERE SPECIFIC HEAT OF ICE IS A CONSTANT VALUE OF 2100

J/(kg °C )

heat required from  0°C ice to 0°C water = mass× specific heat of fusion of ice

                                                             = 7×3.36×10^5

                                                              = 2.352 × 10^6 J

                                                              = 2.352 MJ

TOTAL HEAT ENERGY REQUIRED = 0.1323 MJ +2.352 MJ

                                                          = 2.4843 MJ

hence option A is correct

5 0
3 years ago
Exercise will not help maintain the health of your endocrine system.
Mashcka [7]
A. True

Hope this helps :)
6 0
2 years ago
Electrically inert metal ball A is connected to the ground by a wire. What happens to the charge of this ball if you bring a neg
kaheart [24]

Explanation:

They will repel, meaning that they are made of an electrical conductor.

7 0
3 years ago
True or false: Scientific models are always built to scale, and are fully functional representations of the product they are tes
vodka [1.7K]

Answer:

False

Explanation:

Scientific models are not always built to scale and may not be fully accurate

3 0
2 years ago
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