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Adam.moodie Posted 15 years ago
Vocabulary

Please need help is the ocrrect Answer A or B? and Why?

Paragraph 2: An ecologist who studies a pond today may well find it relatively unchanged in a year's time. Individual fish may be replaced, but the number of fish will tend to be the same from one year to the next. (We can say that the properties of an ecosystem are more stable than the individual organisms that compose the ecosystem).

According to paragraph 2, which of the following principles of the ecosystem can be learned by studying a pond?

A) Ecosystem properties change more slowly than individuals in the system.

B) A change in the members of an organism does not affect an ecosystem's properties.
  

Top answer

Hello adam, and welcome to the forums. We need to see your thoughts first. I would suggest that the sentence in parentheses is the key to the answer.

— BarbaraPA

  • Hello adam, and welcome to the forums.
  • We need to see your thoughts first.
  • I would suggest that the sentence in parentheses is the key to the answer.
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11 Answers
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Hello adam, and welcome to the forums.

We need to see your thoughts first. I would suggest that the sentence in parentheses is the key to the answer.
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so sorry about sending this question to repeated threads. promise it won't happen again, and many thanks for the super fast reply -
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I think "A change" can be interpreted more broadly than simply saying "A year ago, we saw Fred, Ginger, and Peter, the fish we named. This year, we saw Judy, Liza, and Tony, fish of the same species that we named."

B would allow for a change in species, a change in numbers, an introduction of predators to the ecosystem, or the appearance of invasive species. THAT would indeed change th
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Thank you for the attempt to answer the question. But i'm still confused
sorry - but thank you
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adam.moodieB) A change in the members of an organism does not affect an ecosystem's properties.
If "A change" includes a change in the TYPE of organisms, that could affect the ecosystem's properties. Just because the whole ecosystem changes more slowly than the individual members, you cannot infer that the individual members can change without having any effe
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yes, so that means A is correct Not B

Stable does not imply no change -

IS that what you mean?

thank you again Buddy - you're a super star!! [H]
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Was this a science question or an English question? It was certainly a hard reading comprehension question!
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it's a reading comprehension question.

thanks, i agree. both are correct . But the writer last year said B was correct. This eayr he changed his mind and said B is correct. I think he didn't realise that both can be seen as correct.

but thank you so much for you help

I still don't know you name?
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It's right in my signature line - Barbara. Emotion: smile
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Hey Barbara,

Great Forum, did you set it up? smart girl Emotion: smile

Thank you again for all your help

cheers
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