What is the name of the stiff nonconducting rod that develops down the back of the embryo of all chordates?

a. dorsal nerve cord
b. nerve net
c. ganglia
d. notochord

What is a coast of using technology to transport water? a.cities can be built in otherwise uninhabitable areas. b.crops can be irrigated and grown in new areas. c.floods can be averted in flood-prone areas. d.freshwater supplies can be depleted in an area.

If bacteria are much too small to see, what is one reason why can we see colonies in the petri dishes that have plenty of food to eat after only a few days?

Movimento corporal andar, musculos planos e eixos