Answer:
The correct option is<em> b. at each step, energy is lost from the system</em>
Explanation:
The amount of energy that travels from one trophic level to another is known to declines at each level. Infact, only 10% of the energy travels from one trophic level to another.
This is because most of the energy is lost by the organisms at each trophic level. It is due to the metabolic processes which occur in the organisms of each trophic level and most of the energy is lost as heat.
Answer: TRUE
Explanation:
Sound waves enter the OUTER EAR and travel through a narrow way up to the eardrum, where it vibrates.
The vibrations are sent to the bones of the MIDDLE EAR where they are amplified, and passed to a structure called COCHLEA in the INNER EAR.
Finally, it reaches the sensory cells that passes it to the auditory nerve that transmit the sound to the brain as electrical signals (neural messages) for proper interpretation.
So, it is True because from OUTER EAR to MIDDLE EAR, to INNER EAR.
Answer:
A.Fossilization
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Answer:
Answer: The selective pressures(predators) in the environment acted more on the white moths than the black moths.Therefore there was a directional selection towards the black moths compare to the whites;with a shift in alleles frequency towards the black phenotype.
Conclusion: Black moths were naturally selected compare to the whites;as evident from 52 to 14 numbers recaptured
Explanation:
