During ecological succession, how does the growth of young hardwoods affect the organisms living
in an ecosystem?

A Grasses and low shrubs are
unable to obtain the amount of light they need to
survive, so there are small numbers of them.
B The trees provide shelter and food for a variety of mammals, insects, and
birds.
C In autumn, falling leaves provide a source of energy for decomposers such as
fungi.
D. All of the above

If a set of instructions that determines all of the charactersitics of an organism is comparedto a book,and a chromosme is compared to chaper in the book,then what might be compared to a paragraph in the book?

What is the difference between bacterial infections and viral infections?

Recent research by marine biologists suggests that bottlenose dolphins have names for themselves. scientists played sounds they had identified as the names of particular dolphins, putting them through a synthesizer so that they did not sound like the voices of particular dolphins. the researchers found that dolphins would respond to the names of other dolphins that they were related to or associated with, but they ignored the names of strangers. this discovery suggests a much greater degree of self-awareness in aquatic mammals than was previously suspected. if this research holds up, what does it suggest about dolphins?