Question

The __________ layer of the atmosphere has the life giving oxygen that is needed for ____________

Answer 1

Answer:The average mass of one H2O molecule is 18.02 amu. The number of atoms is an exact number, the number of mole is an exact number; they do not affect the number of significant figures. The average mass of one mole of H2O is 18.02 grams. This is stated: the molar mass of water is 18.02 g/mol.

Explanation:

Answer 2

The stratosphere layer of the atmosphere has the life-giving oxygen that is needed for UV protection.

Explanation:

• The stratosphere is vital for Earth's existence as it provides small amounts of ozone, a source of oxygen which prohibits damaging UV rays from entering Earth. It's the Troposphere.
• At the bottom of the atmosphere is the troposphere, where most of the layer life occurs. The troposphere is also the only atmospheric layer capable of sustaining life.
• The higher layers flushed out the dangerous radiation and large quantities of water vapor are present.

Learn more about stratosphere

State characteristics of stratosphere

https://brainly.in/question/3173937

What is an important feature of stratosphere

https://brainly.in/question/4760732