Answer:
because of the use of oil and fossil fuel and the improvement of inventions
Explanation:
<h3><u>
Answer;</u></h3>
All of the above are True
- Part of the Bohr model proposed that electrons in the hydrogen atom are located in "stationary states" or particular orbits around the nucleus.
- An orbital is the volume in which we are most likely to find an electron.
- The uncertainty principle states that we can never know both the exact location and speed of an electron.
- The emission spectrum of a particular element is always the same and can be used to identify the element.
It's the concentration of sense organs, nervous control, etc., at the anterior end of the body, forming a head and brain, both during evolution and in the course of an embryo's development.
