Which of the following pairs of events are disjoint? a) A poker player gets a flush (all 5 cards in the same suit); a poker player gets a 3 of a kind for the same 5-card hand b) A mother gives birth to a baby girl; the same mother gives birth to twin daughters on the same day

Long term exposure to waves can cause sunburns and skin cancer.

What’s the student’s scientific question

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes