After studying rainbows in (429)________, Sir Isaac Newton was able to explain how they are formed.

We can infer from the passage that

390)_______ people continue cutting down that many trees in Sarawak rain forest, all the trees could be gone in eight years.

The word “them” means

Secondary rainbows are unusual because the light is reflected twice within the raindrop before it (431)________ a rainbow, so the colors are in reverse order and not as bright as primary rainbows.

The phrase “in season” in paragraph 1 refers to

According to the passage, which of the following is learning in broad view comprised of?

The word “prevent” in paragraph 1 is closest in meaning to

The word “emaciated” in the passage mostly means

Sailors came back from these islands with

The word “exalting” in the passage is closest in meaning to

Which of the following best explains why composting is not feasible on a large scale?

A survey by the French army in 1881 showed that among the 387 men (411) __________there were 1,333 designs.