Which of these describes a quantitative observation?
oa) an observation of the phenomenon itself
ob) an observation of the relative size of something
oc) an observation of an effect the phenomenon has
od) an observation that has a number associated with it

What is the farthest destination to date for a human spaceflight mission?

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

Which of the following is a true statements about viruses? viruses have no nucleus. viruses are alive. viruses have a cell membrane. all viruses are deadly.