(science)

when a scientist conducts an investigation, which of the following is the first thing he or she should do?
a) design the experiment
b) make observations
c) identify the problem
d) form conclusions

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

If two objects at different te, peraure are in contact with each other what happens to their temperature