The carrying capacity is the number of organisms that can live in a place.
Biome
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If you have a quadratic function with real coefficients then it can have:
two distinct real roots, or
a real double root (two coincidental roots), or
no real roots.
In the last case, it has two complex roots which are conjugates of one another.
The stomata let carbon dioxide diffuse in the plant since it's needed for photosynthesis. If it's not opened during daylight as a result of excessive water loss from the leaf, their closure will restrict photosynthesis by preventing the inward diffusion of atmospheric CO2.
plant roots
interbreed and produce fertile offspring.
Camouflage
mosses