First question - cell well
second question - bacteria do not have a membrane enclosed nucleus. the and of bacterial cells is found loose in the cytoplasm.
The aweser would be B properties and rare earth elements
Answer:
The study of oceans and their life.
Explanation:
The study of oceans, including seawater, the ocean floor, and marine plants and animals.
A dichotomous key is defined as a biological tool for identifying unknown organisms to a particular taxonomic level. It is constructed with many levels and series of couplets.
So, by observing the given dichotomous key, it is concluded that the correct answer is Option A- Organism X and Z have at least one observable trait in common in this dichotomous key.