Just like humans and other
animals, plants need a certain amount of nutrients to thrive and
grow. In this Lesson, well learn about these required nutrients
and find out what happens when theyre missing from a plants
Because plants get most of
their nutrients from soil, well discuss how soil is created and
how its composition can vary depending on water flow, plant life,
and the numerous organisms that live there.
The nitrogen gas in the air is
unusable by plants, so they rely on bacteria to fix it into a
usable form. In the last part of the Lesson, well focus on the
process of nitrogen fixation. Well learn about the different
kinds of nitrogen-fixing bacteria and their relationships with
plants and soil.
Well also find out how
farmers can improve the usable nitrogen content of their land with
crop rotation and fertilizers, and well take a look at the
environmental consequences of commercial fertilizer use.