The leaf scraps left in the crabs' burrows____

Sea animals eat____ and ___ to survive.

If people don't know much about an animal they can ____hurt it.

People didn't know much about red land crabs until______

A ___ ____can be destroyed by the loss of even one of its components.

Scientists tend to give up when one of their plans fail.

Joanna Gyory's research might lead to ___________

The writer uses a ___ to help the reader understand the life cycle of a red land crab.

The writer uses _____ ______ to help the reader understand Joanna's excitement and her commitment to protecting the crabs.

The writer uses _____&______ ___to help the reader understand the text.

A message of the story may be even the smallest creatures have a great impact on the food chain and environment so their ___________.

The word vital means:

Scientists go to great lengths to ______.