Who element is almost certainly requierd for life to exist?

OK, temperature, water, sunlight, nitrogen, and nothing that will kill off life.

1. What is necessary for life to exist?
2. What are the two things necessary for life to exist?
3. What is the requirement of energy for life to exist?
4. What is the requirement of atmosphere for life to exist?
5. Which chemical element should be abundant in the atmosphere for a planet to sustain life?
6. What atmosphere does life need and why?
7. How do the characteristics of Earth allow life to exist?
8. What are the basic requirements for sustaining life on earth?
9. Where does almost all energy for life originate?
10. What was the main requirement for the development of life on Earth?
11. Which component of the atmosphere makes life possible on Earth?
12. What element composes the ozone layer?
13. Why is an atmosphere needed for life?
14. Which is the most abundant element in the atmosphere?
15. Which of the following pairs of elements make up almost 90% of the earth?
16. Which of the most abundant elements in Earth's atmosphere have in common?

What is necessary for life to exist?

It is useful to categorize the requirements for life on Earth as four items: energy, carbon, liquid water, and various other elements.

What are the two things necessary for life to exist?

Water and air are two things essential for existence of life on earth.

What is the requirement of energy for life to exist?

Based on what we know about life on Earth, the only place we know life exists for sure, we can determine at least 3 major requirements: Energy. Warmth to allow liquid water to exist (or liquid methane?) Energy is needed to fuel chemical reactions (metabolism)

What is the requirement of atmosphere for life to exist?

Complex, multicellular life on Earth needs an atmosphere for either respiration or photosynthesis. Even aquatic species rely on dissolved oxygen from the air. Photosynthesis, in contrast, requires carbon dioxide, also from the atmosphere.

Which chemical element should be abundant in the atmosphere for a planet to sustain life?

Oxygen plays a critical role in respiration, the energy-producing chemistry that drives the metabolisms of most living things. We humans, along with many other creatures, need oxygen in the air we breathe to stay alive.

What atmosphere does life need and why?

Carbon dioxide and oxygen are the gases in the atmosphere that are needed for life. Plants need carbon dioxide for photosynthesis. They use sunlight to change carbon dioxide and water into food. The process releases oxygen.

How do the characteristics of Earth allow life to exist?

What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.

What are the basic requirements for sustaining life on earth?

To sustain life on earth living organisms require energy, gases, water, soil, and favourable temperatures.

Where does almost all energy for life originate?

The sun, directly or indirectly, is the source of all the energy available on Earth.

What was the main requirement for the development of life on Earth?

Here we discuss essential requirements for the first emergence of life on our planet and propose the following nine requirements: (1) an energy source (ionizing radiation and thermal energy); (2) a supply of nutrients (P, K, REE, etc.); (3) a supply of life-constituting major elements; (4) a high concentration of ...

Which component of the atmosphere makes life possible on Earth?

Ozone in the Upper Atmosphere Makes Life on Earth Possible

This protects living things on Earth's surface from the Sun's most harmful rays. Without ozone for protection, only the simplest life forms would be able to live on Earth.

What element composes the ozone layer?

Ozone is a gas made up of three oxygen atoms (O₃). It occurs naturally in small (trace) amounts in the upper atmosphere (the stratosphere).

Why is an atmosphere needed for life?

The atmosphere protects us from UV and other short wavelength light that would otherwise do a lot of damage to the DNA of living organisms. ... The atmosphere is also important because it contains oxygen, which we and other living organisms breathe.

Which is the most abundant element in the atmosphere?

The most abundant naturally occurring gas is Nitrogen (N₂), which makes up about 78% of air. Oxygen (O₂) is the second most abundant gas at about 21%. The inert gas Argon (Ar) is the third most abundant gas at . 93%.

Which of the following pairs of elements make up almost 90% of the earth?

Layers of the Earth

Nearly 100 percent of the mass of Earth's core is composed of the two elements iron and nickel. Scientists have concluded this from the knowledge that the core must be 13 times as dense as water, leaving only some combination of molten iron and nickel as plausible candidates.

Which of the most abundant elements in Earth's atmosphere have in common?

Nitrogen and oxygen are the most common elements in the atmosphere. They make up almost 99% of the atmosphere by mass. Argon makes up most of the rest of the atmosphere.