I believe that the common features of the three is that they usually give a suggestion that brain stimulation is effective when treating severe forms of depression. These methods are usually used after other methods have been tried and failed. They involve the stimulation of the brain.
<span>The process of speciation is the
separation of a specific population into different species. The factors that
may affect to maintain this genetic isolation are: allopatric, sympatric,
prezygotic and postzygotic barriers. Allopatric barriers occurs when two
species that are of the same family before cannot go back to the way they were
before unless a contact between the two is established again. Sympatric are a
group of species that shared the same family before but forced to evolve
separately due to environmental factors. Prezygotic barriers are a group of species
that are formed from the developing fertilized egg. </span>
Answer:
B
Explanation:
They all do help improve quality of life.
I did some research and found that the average human requires 550 L of
oxygen per day which means that :
(550 L O2 / day) x (1 day / 24 hours) = 22.9166667 L O2 / hour or
22916.67 mL O2 / hour
1 mL = 1 cm^3
22916.67 mL O2 / hour = 22916.67 cm^3 O2 / hour
Now convert that volume from cm^3 to nm^3
22916.67 cm^3 O2 / hour = 2.29167x10^25 nm^3 O2 / hour
So for 1 hour’s worth of O2, we need a volume of 2.29167x10^25 nm^3
