The antibiotic was absorbed by the soil and disrupted the balance of the soil. The result was to kill some of the bacteria living in the soil, which were contributing to the growth of the soybeans. There are bacteria which participate in the process of nitrogen fixation, by providing usable nitrogen to the roots of the plants.
Answer:
Node
Clade
Taxa
Explanation:
Node is a point in a cladogram where a single ancestral lineage breaks into two or more descendant lineages. A node usually has similar characteristics due to the common ancestral lineage.
Clade is a group of organisms that includes an ancestor and all of its descendants. An example is birds, dinosaurs and crocodiles all belonging to a common ancestor as animals but different descendants.
A taxa is any named group of organiſms,
whether they form a clade or not. It represent any level of taxonomic groupings.
A proposed explanation for a natural phenomenon is a hypothesis.
The hypothesis can also be known as an educated opinion.
