This is a spherical mixture of gases that surrounds the planets

a. exosphere
b. atmosphere
c. lithosphere
d. troposphere

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

but there is no

i guess you forgot putting it.

did you fail the test? xd