________ is said to occur when a similar trait evolves in two unrelated species.

All chordates are also vertebrates.

In the moss life cycle, the ________ is the dominant generation.

Vascular tissue that carries water through the stem to the leaves

These are fossils that identify deposits made at apparently the same time in different parts of the world.

The prevailing weather conditions in a particular region.

This group mostly lives on land as adults, but requires an aquatic environment to reproduce.

The northern elephant seal was hunted almost to extinction during the 18th and 19th centuries. Less than 100 seals were left to contribute to the gene pool of their future generations. Since the early 20th century, the elephant seals have been protected by law in both the U.S. and Mexico. Over 100,000 seals now inhabit the western shores of North America, all related to the small population that survived the slaughter of hunters.Scientists fear the elephant seals may be more susceptible to disease and pollution due to

A(n) _ consists of all the populations of multiple species interacting in a particular area.

Answer the following questions about the pH scale.An increase in pH from pH 8 to pH 9 represents what increase or decrease in hydrogen ion concentration?