Which layer is above the Stratosphere?

What is the outermost layer?

Which layer do airplanes and jet fly in?

Which layer is the farthest from Earth and can still be affected by Earth´s gravity.

Which layer consists of a large amount of ions and free electrons?

Which is true about the Mesosphere?

In this layer, it is not possible for research equipment to stay in orbit

Which layer contains most of the mass of Earth's atmosphere

Which layer lies at the top of the Mesosphere and the bottom of the Thermosphere