Most cells of the human body directly receive a variety of endocrine secretions through the activity of which system

Select one:
a. reproductive system
b. digestive system
c. circulatory system
d. nervous system

Talking listening and reacting non verbally are all part of communicating

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.

Approximately what wavelength of light is best absorbed by chlorophyll a