Question

read the text.
archeologists have found pots of honey that are thousands of years old, yet still unspoiled. what makes honey last indefinitely? bees play the starring role. after they suck nectar from flowers using their tongues, they store it in special honey stomachs. inside these stomachs, the nectar mixes with an enzyme that causes it to break down into gluconic acid and hydrogen peroxide, a natural disinfectant. next, the bees place the honey in honeycomb cells within the hive, but the honey is still quite wet. the bees flap their wings over the honey, which has the effect of drying it out. the final product—a thick, sticky substance containing hydrogen peroxide—doesnt allow bacteria to grow in it. honey, therefore, provides an effective barrier against infection. it has been used medicinally for centuries.
match causes with their effects.
the nectar is broken down into gluconic acid and hydrogen peroxide. the honey dries out.
honey stifles the growth of bacteria.
cause
the nectar mixes with an enzyme.
the bees fan the honey with their wings.
effect
honey prevents infection.

Explanation:

• For the first pair: The text says "Inside these stomachs, the nectar mixes with an enzyme that causes it to break down into gluconic acid and hydrogen peroxide". So when the nectar mixes with an enzyme (cause), it breaks down into gluconic acid and hydrogen peroxide (effect).
• For the second pair: The text states "The bees flap their wings over the honey, which has the effect of drying it out". So when the bees fan the honey with their wings (cause), the honey dries out (effect).
• For the third pair: The text mentions "The final product—a thick, sticky substance containing hydrogen peroxide—doesn’t allow bacteria to grow in it. Honey, therefore, provides an effective barrier against infection". So when honey stifles the growth of bacteria (cause, as hydrogen - peroxide in honey stops bacteria growth which is a part of the overall process of honey preventing infection), honey prevents infection (effect).

Answer:

• Cause: The nectar mixes with an enzyme. Effect: The nectar is broken down into gluconic acid and hydrogen peroxide.
• Cause: The bees fan the honey with their wings. Effect: The honey dries out.
• Cause: Honey stifles the growth of bacteria. Effect: Honey prevents infection.