Ineed with a quick biology question! which of the following is considered the "zipper" and separates strands of dna during replication? question 5 options: helicase isomerase lipase polymerase

Plz plz plz quick! 49 points for whoever which of the following statements about greenhouse effect is true? *life on earth is suffering because of greenhouse effect *the greenhouse effect is caused by human activity *all greenhouse gases are harmful *life on earth would not exist without the greenhouse effect

How does a lytic infection differ from a lysogenic infection?

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent