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Fenway Park, home of the Boston Red Sox, is situated on land that was once a fen, a kind of wetland. The replacement of the fen is an example of _______________.

Which of the following is NOT a characteristic of the phylum Chordata?

Some species cannot mate because the size of their genitals does not match or align. This is an example of:

Placental mammals, such as whales, dolphins, and porpoises belong to the group ________________.

Which statement about small populations is incorrect?

_______________________ occurs when introduction of one species reduces another species that require the same resources. Hint: Introduction of harmless bacteria to remove disease-causing bacteria in chicken. 

Which of the following biomes has a structure made up primarily of the mineral deposits secreted by its dominant organisms?

__________________ is a relationship in which one species benefits & the other is unaffected. For example, egrets and domestic cattle have this relationship. 

Which factor is density-independent?

In which groups of plants is the double fertilization occurs?