<span>Nitrogen gas is converted to nitrate compounds by nitrogen-fixing bacteria in soil turns nitrogen gas into root nodules. Nitrogen is the most commonly limiting nutrient in plants. Legumes use nitrogen fixing bacteria, specifically symbiotic rhizobia bacteria, within their root nodules to counter the limitation.</span>
The weathering of a sedimentary rock is called chemical weathering. xxx
3x10^-4 cm = 0.0003 cm
3x10^4 km = 30,000 km.
Elements cannot be broken down in this fashion.
Compounds, homogeneous mixtures, and heterogeneous mixtures can be broken down or separated with chemical processes, or in some cases, just by manual separation.
When atoms share six electrons, they are joined by a double bond. (.5 points)
a. True
b. False?
Is False
