Which punctuation completes this sentence. loss of habitat puts penguins at risk they suffer from diminish food supply man-made hazards and climate change

Semi-colon, Comma and Full stop

Explanation:

Loss of habitat puts penguins at risk; they suffer from diminish food supply, man-made hazards and climate change.

The semi-colon is used to further explain the preceding sentence which was stated before. The comma is used to separate the items stated and the fullstop is used to end the sentence.

b. both have yearned to escape the environment they experienced as a child.

mark twain, real name samuel langhorne clemens, was an american writer, humorist, entrepreneur, publisher, and lecturer. among his novels are the adventures of tom sawyer and its sequel, the adventures of huckleberry finn, the latter often called "the great american novel". wikipedia