Answer:
The stratosphere contains 9.9% of air mass over the Earth. 90% of the ozone layer is found in the stratosphere's upper crust. For more information, look it up. Oh and by the way, airplanes fly in this layer. Hope this helps. Good luck on anything your doing. Please mark brainliest if you feel like it, I would really appreciate it.
Answer: the answer is B
Explanation: i go to connexus i had this question
Answer:
Yes
Explanation:
Scientific laws must always be accompanied by theories. Without theories, laws cannot be formed. In other words, scientific laws are made from scientific theories.
<em>When a hypothesis has been tested by several independent researchers and found to be true, this leads to the development of a theory. A theory becomes a law when it is able to hold true against a wide range of similar phenomena.</em>
Answer would be B. CNS the central nervous system
Answer:
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).