Which of the following is an example of a phenotype?
a. actual height of an organism
b. the average height of a population
c. the gene that determines an organism's height
d. all of the different heights that an organism can possibly be

Identify the arrows that show the correct direction of heat transfer. 66°f 112°f 98°f

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

Which is not true of the intertropical convergence zone? a) it features heavy precipitation b) it's where the trade winds collidec) it's a high-pressure zone with sinking air d) it is also known as the doldrums