A trip to the Rainforest Richard and Matthew abandoned their boat because they couldn’t get past a 7

Part 2
7. queen 8. colony 9. wood 10. (enough) feedback
11. staircase 12. sandbags/sand bags/bags of sand 13. intelligence 14. (mathematical) model

Vanilla

Susie says that, despite its cost, vanilla is the world’s most 7   spice.
The vanilla plant is originally from Mexico, where it depends on a local 8   for its existence.
Susie says the term 9   is used to talk about vanilla plants on the island.
Recently the vanilla harvest has been affected by 10   and this impacts on the price.
These days the vanilla plants are covered by 11   for protection.
Sometimes there are 12   in the vanilla seed pods to show which farm they come from.
The vanilla pods are sun-dried and then 13   briefly before being packed in boxes.
The boxes used to store the pods are wrapped in 14   to keep the heat in.
Part 2
7. popular 8. insect 9. green gold 10. (the) storms
11. nets/netting 12. (small) holes 13. boiled 14. Blankets

Inventing the Microwave oven

The invention of the microwave oven began when a chocolate peanut bar 7   in Percy Spencer’s pocket.
Spencer had previously invented a method for 8   the tubes used in radar equipment.
Spencer’s first experiment involved putting 9   near to some radar equipment.
In his next experiment, an egg was put into a kettle and it 10   .
The first microwave oven was set up in 11  in Boston in 1946.
The first microwave oven got its name as a result of 12   at the company.
One problem with the first microwave oven was that 13   did not change colour in it.
When a microwave oven that could be placed on top of a 14   was produced, sales began to rise.