Biogeochemical cycles on earth serve a variety of different purposes. what do the biogeochemical cycles have in common?
a. they all serve the same function in sustaining life on earth.
b. they all include only nonliving components of an ecosystem.
c. they are all essential for sustaining life on earth.
d. they all include only living components of an ecosystem.

Abanana plant produces rhizomes, which are involved in?

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

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?