Human development begins with a(n)___ which is created when join and the first cell division takes place ASAP plz

Even when Roman Empire collapsed?

Are there choices?

Explanation:

Zygote, the nucleus of  male and female gametes join, mitosis

Explanation:

The process of fertilization involves the fusion of the nucleus or the genetic material of the male and female gametes. The process forms a diploid cellular structure called the zygote. After the formation of the zygote, the first cell division or mitosis produces the embryo which develops into an organism.

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .