<h2>Fixation</h2>
Nitrogen in its gaseous form (N2) can’t be used by most living things. It has to be converted or ‘fixed’ to a more usable form through a process called fixation. There are three ways nitrogen can be fixed to be useful for living things:
<h3>Biologically: </h3>
Nitrogen gas (N2) diffuses into the soil from the atmosphere, and species of bacteria convert this nitrogen to ammonium ions (NH4+), which can be used by plants. Legumes (such as clover and lupins) are often grown by farmers because they have nodules on their roots that contain nitrogen-fixing bacteria.
<h3>Through lightning: </h3>
Lightning converts atmospheric nitrogen into ammonia and nitrate (NO3) that enter soil with rainfall.
Explanation:
The difference between the lower mantle and the oceanic crust is first their respective locations, pressure and temperature-- the pressure and temperature increases with depth in the earth this the mantle is more hot and under great pressure than the crust. hope this helps
Answer:
2
Explanation:
The two DNA strands intertwine around each other to form a double helix.
Answer:
True.
Explanation:
There are large, frozen ice glaciers at the North and South poles.
Answer:
Think of decomposers as an ecosystem's maintenance crew. Without decomposers, dead animal carcasses would pile up, and the soil would lack nutrients plants need to grow– the entire ecosystem would break down without this vital component of the food chain.
if you need help on the other answer don't hesitate to ask!
