Answer:
all of the multiple choice are correct.
the answer to the second graph one is C the last one, or Monarch butterfly population is decreasing.
The one about Frank and maple trees is A, or carrying capacity. The second one about Frank and the maple trees is also A, or population distribution.
Explanation:
Answer: c not all cells have a nucleus (prokaryotic cells don’t)
Explanation:
It’s characteristic is the need for energy
Trisomy 21 (nondisjunction) Down syndrome is usually caused by an error in cell division called "nondisjunction." Nondisjunction results in an embryo with three copies of chromosome 21 instead of the usual two. Prior to or at conception, a pair of 21st chromosomes in either the sperm or the egg fails to separate.
