Which of the following is true about phosphorus? a
Phosphorus is an important component of RNA and DNA.
b
Phosphorus is released into the air when animals exhale carbon dioxide.
c
Phosphorus can be “fixed” by lightning.
d
Phosphorus is found primarily in the atmosphere.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

i think its y= -4x-14