Es una característica sexual primaria. a. Aparición de vello púbico.
b. Presencia de pene o vagina.
c. Crecimiento de los senos.
d. Secreción de hormonas.

Someone me with this: a mineral' is determined by its actomic structure.

Which of the following is a testable hypotheses?

Parthenogenesis is a type of reproduction that does not require a mate. it’s rarely seen in birds and higher vertebrates. parthenogenesis involves the formation of a zygote. but this zygote is formed without fertilization. in parthenogenesis, in the absence of a male gamete, the ovum develops directly in the zygote.