Why is the water bath used for boiling a leaf in alcohol

What is a dendrite and what does it do?

When it is summer at the south pole, a. the northern hemisphere is tilted toward the sun. b. the southern hemisphere is tilted away from the sun. c. the northern hemisphere is tilted away from the sun. d. both the southern and northern hemispheres are tilted toward the sun.

Which sex chromosome contains more genes? a.x b.y c.r