2. Describe the process of ossification of the skull using each of the following terms:
Cartilage
Blood vessels
Osteoblasts
Osteocytes
Osteoclasts
Enzymes
Calcium
Phosphates

Which are forms of nitrogen that are usable by humans

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

What is responsible for the uneven heating between the poles and the equator on any given day