What happens during the first trimester? its asking what happens during the first three months in the womb.
a. the major organ systems have started developing.
b. contractions begin in the womb.
c. the fetus develops fully working eyes.
d. rhythmic breathing movements begin.

How many chromosomes are in a human gamete?

Try to answer all questions if possible i will take anything this is worth 21 ! ! 1. what rights do citizen's have in a monarchy? 2. what countries practice monarchy? 3. what is one advantage of a monarchy? 4. what is one disadvantage of a monarchy? 5. what rights do citizen's have in a dictatorship? 6. what countries practice dictatorship? 7. what is one advantage of dictatorship? 8. what is one disadvantage of dictatorship?

Forensic scientists think they know the identity of a skeleton. what rule should they use to select a relative whose dna could be used to try to confirm the identity?