Living things need small amounts of phosphorous in order to survive.
what term describes phosphorous?

a.) macronutrient
b.) micronutrient
c.) anthropogenic
d.) non-essential

B.) Micronutrient

Explanation:

I have the same test and this is the correct one.

answer; ///i believe its: ///(embolus);

many phylogenetic trees have a single lineage at the base representing a common ancestor. a lineage that evolved early from the root and remains unbranched is called basal taxon. when two lineages stem from the same branch point, they are called sister taxa.

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explanation: