the prompt: the diagram above shows how carbon is cycled through the environment. what two processes are most important in maintaining this cycle? make sure your claim is supported with evidence and reasonable. include a rebuttal in your response.

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.

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent  

What question would a biologist most likely investigate