1.Amniocentesis is a procedure which involves draining a small amount of amniotic fluid. Amniotic fluid contains a few cells from the fetus. Chromosomes in the cells, which contain the genetic information of the fetus, are examined for abnormalities
2. DNA testing, introduced in 1976, is used to identify specific gene disorders.
Answer:
Have hard parts
Were generally large
Lived in a narrow range of geographical area
Are extinct
Explanation:
Answer:
A
Explanation:
if you hide a storm drain it really doesn't do much because it doesn't clean the water, and all of the other options do clean water of contaminants.
Answer:
Population size decreases
