1) Communicationlanguage allows one to understand the thoughts of another2) Arbitrariness<span>Relation between a word and what it refers to is arbitrary
</span>3) Meaningful structure<span>All languages are patterned so larger structures build in a sensible way on smaller ones
hope this helps!!!
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Answer:
In plants and algae, which developed much later, photosynthesis occurs in a specialized intracellular organelle—the chloroplast. Chloroplasts perform photosynthesis during the daylight hours. The immediate products of photosynthesis, NADPH and ATP, are used by the photosynthetic cells to produce many organic molecules.
Convection drives the circulation of air in the earth's atmosphere.
The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere.
Overproduction of offspring, inherited variation, and the struggle to survive.
So: b, d, and e
