How can you combat global warming?

A) keep the air conditioning on

B) move to a cooler climate

C) avoid eating fish

D) turn off the lights when you leave a room

What must happen before meiosis can begin? a. four gametes must be produced b. the four tetrads must be pulled apart c. dna doubles and produces sister chromatids d. the cell membrane pinches together

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Asegment of dna that codes for rna and a protein is a