<u>Nitrogen gas gets converted to nitrates for plants to use</u>
Hope this helped you- have a good day bro cya)
You didn't include a list, so omit anything that doesn't appear in your instructions. Here's structures in order of blood flow:
Superior and inferior vena cava
right atrium
tricuspid valve
right ventricle
pulmonary semilunar valve
pulmonary arteries (2 - one to each lung)
lungs
pulmonary veins (4 - two return from each lung)
left atrium
bicuspid, or mitral valve
left ventricle
aortic semilunar valve
ascending aorta
Tundra ecosystem is cold and sunlight is short. Plants need sunglight and warmth in order to grow, thus plants in tundra are shorter and cloers to the ground since the ground is warmer than the air