I think B is the answer. Hope this helps!
Also referred to as behavioral and cognitive neuroscience, the field has been used to study child development in highly stressful environment compared to to others especially with regards to school learning. Other examples include its use in the diagnosis of irrelegular sleep disorder and insomnia
Answer:
Ca has 20 protons, so neutral it would have 20 electrons, but according to the charge, 2 electrons have been lost.
Explanation:
Answer: dust, gas, dark matter,round
