The umbilical cord contains one umbilical vein and two arteries. Hope this helps.
Explanation:
hypothesis is the last one
data is the 3rd one
inference is the 2nd one
and control group is the first one
process of elimination is your best friend
If enough ejecta (mainly ash) is sent into the upper atmosphere, the dust particles will block solar energy causing a decrease in temperature. This has happened in the past. Look for the year without summer caused by a volcanic eruption.
Asexual reproduction only requires one organism. It is normally faster and that’s how organisms make more in a short amount of time. Sexual reproduction uses 2 organisms and it gives the baby more diversity so it can adapt to the environment.
