(GIVING BRAINLIEST) Which variable is described as a factor you can change to observe whether or not it has an effect on the outcome variable?

A) Control
B) Hypothesis
C) Test
D) Question

It is believed that europa, one of jupiter’s moons has an ocean beneath its surface. based on how earth’s oceans and atmosphere are believed to have formed, what can be said about europa’s supposed ocean? the arrival of in the early days of europa’s existence could have formed its ocean. it is likely that the water experienced , similar to earth. it is also possible that this water is retained beneath europa’s surface and in its atmosphere due to europa’s .

What is any method of measuring the age of an object or event in years, such as using atomic half-life?

Steven hawking is on record as saying that viruses can be considered a form of life. considering the list above, what might be his evidence? a) item 5 b) items 1 - 3 c) items 4 - 7 d) items 1 & 2