Where is the common ancestor between Gorilla and Frog? Hagfish
(outgroup)
Salmon
21
B
Frog
Jaws
Keratinous
scales
Lizard
Lungs:
Four limbs
Alligator
Ingroup
D
Gizzard
Feathers
Robin
Claws
or nails
G
Rat
Fur;
Mammary
Glands
Time
Gorilla
Ο Α
OB
Ос
Oo

characteristics of hydrocarbons

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.