Is this investigation a controlled experiment or an observational study? Explain your answer.

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes

Which best describes this behavior? it is beneficial only to the males that do not fertilize eggs. it is beneficial only to the female workers that are not fertilized. it is beneficial to each one of the individual colony members. it is beneficial to the whole species, but not to all of the individual members.