All categories

3 years ago

which statement correctly describes how the amount of ofoxygen in the earth’s atmosphere has changed over time?

Biology

1 answer:

Kay [80]3 years ago

3 0

Answer:

Based on the relative volumes of the gases in Earth’s atmosphere, nitrogen is actually more than 3 times more than oxygen. Because the troposphere is the lowest atmosphere layer, it contains 75 percent of the atmosphere’s mass.. From largest to smallest, Earth’s atmosphere composition contains nitrogen, oxygen, argon, CO 2 and trace gases.

Explanation:

You might be interested in

Which of the following alternative engery technologies is most likey to be used to power a car?

puteri [66]

Answer:

The correct answer to the question is Biofuel

Explanation:

Biofuel can be used as an alternative energy technology source to power a car.

The importance of using biofuel is that it causes less air pollution than fossil fuels, and it has less effect on the global warming. Most importantly, it is produced from agricultural sources.

The biofuels that can be used are butanol,ethanol and biodiesel etc.

Wind, geothermal and hydropower can not be directly used to provide power to the car.

Hence, the correct answer to the question is that biofuel which can be used as an alternating technology to provide power to car.

5 0

3 years ago

What level of structural organization is typical of a cytologists field of study?

Pavel [41]

Answer:

cellular level of organization

Explanation:

5 0

3 years ago

Read 2 more answers

Anyone answer it The flow of materials in different tropic levels of ecosystem is Unidirectional Bidirectional Multidirectional.

creativ13 [48]

Answer:

unidirectional is ur answer mate

hope it helps u

7 0

3 years ago

Read 2 more answers

An engineer is building a new steel skyscraper in a area with a lot of Earthquakes, Compare two systems (fixed based system and

Leokris [45]

Answer:

<h2>Base isolated system</h2>

Explanation:

Fixed based system:-

A fixed-base building (built directly on the ground) will move with an earthquake’s motion and can sustain extensive damage as a result.

Base isolated system:-

A base isolation system is a method of seismic protection where the structure (superstructure) is separated from the base (foundation or substructure).

Hence,

A base isolated system is much more better in a area where there are a lot of earthquakes. 

5 0

3 years ago

Consider three different species of wild cats. Populations of species A are spread evenly across Africa, species B is scattered

kvasek [131]

Answer:

a is DA answer

Explanation:

8 0

3 years ago