Water, carbon dioxide, oxygen, and some other substances can pass through the cell wall. （true or false，and please tell me why？Thank you）

What best explains the inability for life to exist in earth early atmosphere

Construct at least two possible hypotheses for the student’s experiment.

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height