When two different species of lovebirds makes babies, the offspring are unable to build a nest after they mature. the hybrid offspring therefore do not reproduce. this is an example of?

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

c. heat from the poles back down towards the equator.

a = executive branch; b = judicial branch