What kind of research prompted living things to be classified into domains, a grouping above the kingdom level?

One statements is an example of a scientific observation. another statement is an example of a scientific explanation. identify the correct statement for each category to illustrate how scientific explanations are inferred from scientific observations.

Will someone me with this.. specialized cells which perform a particular function form: tissues organs or organism

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring