Physics, Chemistry and Biology: Post your doubts here!

Mai(M4!)

Mai(M4!)

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Explain why there is an increased efficiency
in supplying green plants as human food and
that there is a relative inefficiency, in terms of
energy loss, in feeding crop plants to animals ??
 
saif mahmoud

saif mahmoud

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Mai(M4!) said:
Explain why there is an increased efficiency
in supplying green plants as human food and
that there is a relative inefficiency, in terms of
energy loss, in feeding crop plants to animals ??
Click to expand...

Mai(M4!)
okay i will tell u the ans but not 100% sure

see, when humans consume green plants as there food they are acting as primary consumer while
when animals are fed on the crop plants then we consume the animals then we are secondary consumer
so it is more efficient to be at primary consumer level as we will have more energy gained due to less number of trophic levels and when animals consume the plants first they lose alot of energy in respiration, movement and excretion even fighting diseases so eating plants directly gives more energy so more efficient due to less energy loss by animals because as the trophic level increases the energy available decreases .

Hope this was the right answer :D (y)(y);)
 
A

Awesome12

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Ameena Eesa said:
Howzzit dunn?
Click to expand...
The answer is D
A greater force is being exerted on the left side of the block. This will cause it to move to the right. Since the forces acting on the body are not equal, it cannot move with constant speed and that leaves us with constant acceleration

Ameena Eesa said:
To create cathode rays in a vacuum, what might be a suitable p.d to connect bw the cathode and anode? It'll be a.c or d.c?
Click to expand...
You can use both, but that does not create a vacuum. A vacuum is created by actually sucking all the air from the CRO
 
Ameena Eesa

Ameena Eesa

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Awesome12 said:
The answer is D
A greater force is being exerted on the left side of the block. This will cause it to move to the right. Since the forces acting on the body are not equal, it cannot move with constant speed and that leaves us with constant acceleration


You can use both, but that does not create a vacuum. A vacuum is created by actually sucking all the air from the CRO
Click to expand...
so what p.d shall i apply? 6Va.c /600V a.c /6000a.c/6Vd.c /600V d.c /6000d.c ??? It's an MCQ
 
Ameena Eesa

Ameena Eesa

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Awesome12 said:
The answer is D
A greater force is being exerted on the left side of the block. This will cause it to move to the right. Since the forces acting on the body are not equal, it cannot move with constant speed and that leaves us with constant acceleration


You can use both, but that does not create a vacuum. A vacuum is created by actually sucking all the air from the CRO
Click to expand...
so what p.d shall i apply? 6Va.c /600V a.c /6000a.c/6Vd.c /600V d.c /6000d.c ??? It's an MCQ
 
Mai(M4!)

Mai(M4!)

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saif mahmoud said:
Mai(M4!)
okay i will tell u the ans but not 100% sure

see, when humans consume green plants as there food they are acting as primary consumer while
when animals are fed on the crop plants then we consume the animals then we are secondary consumer
so it is more efficient to be at primary consumer level as we will have more energy gained due to less number of trophic levels and when animals consume the plants first they lose alot of energy in respiration, movement and excretion even fighting diseases so eating plants directly gives more energy so more efficient due to less energy loss by animals because as the trophic level increases the energy available decreases .

Hope this was the right answer :D (y)(y);)
Click to expand...
Thanks that was helpful :D
 
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