Snow on the ground prevents polar climate systems from gaining heat by what mechanism? Question 7 options:

Heating by greenhouse gases

Snow reflecting solar radiation

Heat spread from the equator

Release of heat from Earth's core

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.