Đề thi Olympic Tiếng Anh lớp 8 vòng 3 năm 2013 - 2014

The diagram above shows a portion of a DNA molecule that codes for a normal condition and one that codes for an abnormal condition.

The difference between the normal condition DNA and the abnormal condition DNA shown in section two is called?

The diagram above represents part of the horse fossil record from three time periods. It includes illustrations of the hooves and teeth of horses from each time period.

Which of the following statements is best supported by the horse fossil record?

The diagram above represents a diver's motion from the top of a high diving board into a pool of water.

At which labeled point does the diver have the least potential energy?

Which of these have a positive charge and are found in the nucleus of an atom?

The process of iron combining with oxygen to form rust is considered a chemical change because rust has

When an object pushes down on this bridge, the bottom edge experiences a force that tends to pull it apart as shown.

What is the type of force labeled X?

Which of the following is demonstrated by this experiment?

To create a graph representing the average growing time of different plants in the science lab, which program should Mika use?

To get the profit for each activity, Jose multiplied the expected sales by the sale price and then subtracted the cost of the materials needed.

The formula in cell E3 would be

CH₄ + 2O₂ → CO₂ + 2H₂O

In the reaction above, the products are