Guys this is really urgent A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shine shines brightly. Do you think the changes, which have occurred in the cement , could be reversed? this is not biology it is science

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.