What is the main significance of the biogeochemical cycles?
a.
affect global weather patterns
b.
enable the evolution of diverse life forms
c.
recycle and redistribute nutrients to support life
d.
act as cleaning mechanisms that purify the environment
e.
create the abundance of chemical elements found on earth

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

What molecule does hemoglobin decay into over time