Cho chuỗi thức ăn: Tảo lục đơn bào Tôm Cá rô Chim bói cá. Khi nói về chuỗi thức ăn này, có bao nhiêu phát biểu sau đây đúng? (1) Quan hệ sinh thái giữa tất cả các loài trong chuỗi thức ăn này đều là quan hệ cạnh tranh (2) Quan hệ dinh dưỡng giữa cá rô và chim bói cá dẫn đến hiện tượng khống chế dinh học (3) Tôm, cá rô và chim bói cá thuộc các bậc dinh dưỡng khác nhau (4) Sự tăng, giảm số lượng tôm sẽ ảnh hưởng đến sự tăng, giảm số lượng cá rô  

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the same meaning as the root one:

  The schoolyard is too small to play volleyball in.
  
  

• Choose one sentence that has the same meaning as the root one:

  Jim came down with flu and had to stay in.
   

• Choose one sentence that has the same meaning as the root one:

  She said to us, ''Don’t be late again.''
   

• Choose one sentence that has the same meaning as the root one:

  The rain began to fall during my walk in the country.
   

• Choose one sentence that has the same meaning as the root one:

  I often get up early in the morning.
  
  

• Choose one sentence that has the same meaning as the root one:

  I should have gone by bus and saved a lot of money.
   

• Choose one sentence that has the same meaning as the root one:

  Not many people attended the meeting.
   

• Choose one sentence that has the same meaning as the root one:

  They arrange the tests in this book according to their difficult levels.
   

• Choose one sentence that has the same meaning as the root one:

  I am studying not only mathematics but also chemistry.
  
  

• Choose one sentence that has the same meaning as the root one:

  We were best friends in high school, but we lost touch while we were studying at university.