cell wall to give the plants fixed shapechloroplasts. contains chlorophyll, needed by plants to make food. animals do not need to make food
It is a fixed number, in an equation, for example, that can be expressed as a ratio of two integers.
Two forms of fixed nitrogen are ammonia (NH3) and nitrate (NO3-). Fixed nitrogen refers to nitrogen that has been converted from its inert atmospheric form (N2) into compounds that can be used by plants and other organisms.
equipment land
A compound is a substance formed by chemically combining two or more elements in fixed proportions. An example of a compound is water, which is made up of the elements hydrogen and oxygen combined in the ratio H2O.
Nitrogen can be fixed by lightning during thunderstorms, a process that converts nitrogen gas (N2) into nitrates (NO3-) that can be used by plants. Nitrogen can also be fixed by certain soil bacteria called nitrogen-fixing bacteria, which convert N2 into a form that can be taken up by plants.
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give an example of two fractions whose product equals 1
One fixed pulley and two moveable pulleys would give a mechanical advantage of 3. The rope would go through the fixed pulley, then the first moveable pulley, back through the fixed pulley, and finally through the second moveable pulley.
carbon dioxide and give off the oxygen
Oxygen and food
We can't live without plants. They give us food, and oxygen.