A) gravitropism is how they "know"
Answer:
<em>Hypotheses may vary. Most students will probably state that ecosystems at
</em>
<em>high altitudes will support little vegetation. </em>
Explanation:
Ecosystem distribution is different at different places. Regions at high elevations might usually have low varieties of plants and animals but it cannot be true for every ecosystem located as higher altitudes.
Some communities might be well adapted to live in the cold and hence progress rapidly.
Do you want the catholic answer or do you just want a general answer, because it could be an opinion.
Answer: A pictograph is a symbol for a word or phrase.
i hope this helps you :D
