C. the crust and upper mantle
<em>characteristics that are always present in well-developed living organisms are
</em><u><em>1 digestion
</em></u><em><u>2 excretion
</u><u>3 growth
</u><u>4 respiration
5 reproduction
6 circulation of nutrients and food
senses are also present...
</u>
</em>
Nitrogen is a crucially important component for all life. It is an important part of many cells and processes such as amino acids, proteins and even our DNA. It is also needed to make chlorophyll in plants, which is used in photosynthesis to make their food as part of these life processes, nitrogen is transformed from one chemical form to another. The transformations that nitrogen undergoes as it moves between the atmosphere, the land and living things make up the nitrogen cycle.
so i would choose b or c hope this helps
<span>42. There are 206 bones in the human body. The axial skeleton comprises of 80 bones and the remaining 126 bones make up the appendicular skeleton. These bones are unfused. The appendicular skeleton (or appendages) can be further divided into six major regions.</span>
If I should go to work or not.
