Answer: The correct answer is D) Some energy in each trophic level is used for life processes.
Food chain represents the flow of energy through various living organisms (which lie at different trophic levels) in an ecosystem. The energy flows from one trophic level to the next and it is decreased with subsequent trophic levels.
As per the law of 10% energy transfer, only 10 % of the energy is transferred from one level to the next as the rest of the energy at every trophic level is utilized in various metabolic processes like respiration, digestion, excretion and also liberated as heat in the surrounding.
Due to this, the energy available at any trophic level is less than the previous trophic level.
Answer:
Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations. Artificial selection works the same way as natural selection, except that with natural selection it is nature, not human interference, that makes these decisions.
Explanation:
Answer:
https://en.m.wikipedia.org/wiki/Water_resources
can't upload the image though...
Answer:
yes
Explanation:
this is true. By the way, this compound is called hydrochloric acid and it is highly acidic.
Answer:
The correct option is D. Cow dung would have piled up in Australia.
Explanation:
The native beetles of Australia did not feed on the dung from the non-native cattle. As the cattle were imported from another country, the native beetles did not recognize the texture of the dung and hence, did not feed on them. As a result, cow dung started to pile up. To get rid of the dung, the best possible solution was to import beetles from a different country which recognized the texture of the dung and could feed on it.