Heterotrophs help in maintaining a balance in the ecosystem by providing organic compounds for autotrophs. Certain heterotrophs such as fungi help in reducing decomposed plant and animal material. This recycling activity is important in reducing waste in the environment.
I think *
B. plastic packing
A and D are biological hazards and C is a chemical hazard
Answer:
Option D, None of the above
Explanation:
Latent heat of fusion is the amount of energy required to change the phase of metal from solid to liquid. While Latent heat of vaporization is the amount of energy required to change the phase of metal from liquid to gas.
Now, in the question the unknown metal melts from solid to liquid when
of energy is supplied.
None of the metal in the given set of options has "
metal Latent heat of fusion" equal to or near to 
Thus, option D is correct.
<span>1.Country B will have high level of poverty.</span>