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vitfil [10]
3 years ago
10

Which of the following is an example of sustainable use of natural resources? Question 21 options: 1) clear-cutting a forest 2)

continuously strip mining coal deposits in an area 3) harvesting huge populations of fish from a fishing shoal 4) planting multiple crops together on a field and harvesting them at different times
Physics
2 answers:
kari74 [83]3 years ago
6 0
4 is thebest anser as itleads with harwesting
Temka [501]3 years ago
6 0

<u>Answer:</u>

Planting multiple crops  on a field and harvesting their products  at different times is example of sustainable use of natural resources.

<u>Explanation:</u>

Sustainable use of natural resources refers to the use of natural components present in biological diversity at such a rate that the natural resource doesn’t get depleted. Also, the goal of the sustainable use of natural resources is to safeguard the natural resources for the current and future generations.

So planting multiple crops and harvesting them at different stages is a sustainable process. During this process, the natural resources are not over-utilised rather it is replenished back into the environment. This process also produces more yield from a limited area of farmland. For example, we can do banana plantation along with coconut farming. Here we can harvest both banana products and coconut products.

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Answer:

False

Explanation:

False, as a magnetic field is generated whenever current travels through a conductor.

An electromagnet consists of a coil of wire wrapped around a bar of iron. The coil and iron bar get magnetized when electric current flows through the wire. An electromagnet also has north and south magnetic poles. The magnetic field is strongest at either pole of the magnet.

8 0
3 years ago
I need help plzzzz!!!!!!!!!!!!!!!!
elena-s [515]

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Is the frictional force the same as the applied force when the net force equals zero?
DerKrebs [107]

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Since the net force is to the right (in the direction of the applied force), then the applied force must be greater than the friction force. The friction force can be determined using an understanding of net force as the vector sum of all the forces.

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6 0
2 years ago
if the current is 0.4 A for the 20 ohm resistor, what is the value for the potential difference? ii) Would it be different for t
Genrish500 [490]

Answer:potential difference is more or less like voltage. Using ohms, V=IR

Where V is Voltage

I is Current =0.4A

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ii) V=0.4*30

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The voltage of potential difference is directly proportional to the current and the resistance. So if one increase or decrease, it will have impact on the other.

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fiasKO [112]
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