Answer:
O silicon (Si)
Explanation:
-Valence electrons are electrons of the outermost shell which can participate in chemical bonding. ... -As in silicon, four electrons are present in the outermost shell, so silicon has Four valence electrons.
Answer:
atomic number
Explanation:
atomic number = proton number = number of protons
Answer:
after being in a coma for 3 weeks you need to learn how to walk, also being 30 years in a coma is not possible because the doctors would have let you go off of life support.
Explanation:
<span>It's simple. There's creal definition of gene isolation technique. So the answer is: The type of genetic engineering that often involves isolating genes from one species and introducing them into another is called gene isolation technology.</span>
Answer:
The principle behind both types of solar panel – solar photostatic (PV) and solar thermal – is the same. They absorb raw energy from the sun and use it to create usable energy. In solar PV systems this is through the creation of electricity, whereas thermal systems are used directly for heating water or air.
