Answer:
Risk factors include: Advancing maternal age. A woman's chances of giving birth to a child with Down syndrome increase with age because older eggs have a greater risk of improper chromosome division. A woman's risk of conceiving a child with Down syndrome increases after 35 years of age.
Answer: converts light, oxygen and water into carbohdrates
Explanation: hope this helps..bella~
Answer:
A persons' parents genes (and maybe Natural Selection)
Answer:
More similar because related organisms have the least amount of differences in their DNA during the pass of generations through inherited traits.
Explanation: