PHYSICS HIGH SCHOOL

Which gas became part of Earths atmosphere mainly as a result of the evolution of life forms?

Answers

Answer 1
Answer: That would be oxygen. Oxygen is generated mostly by plants, so as a result of evolution, it became part of the atmosphere.
Answer 2
Answer: The answer is oxygen!

Related Questions

An object starts at position 12 on a horizontal line with a reference point of 0. What is the position of the object if it moves 14 units to the left?
A myth that explains the spots on the moon is called
Work is being done in which of these situations? all motions are at a constant velocity
what variables affect the acceleration of an object and in what matter do they affect the acceleration?
Which describes the relationship between potential and kinetic energy of a ball thrown up in the air as it falls back to the ground? A. Gravitational potential energy increases; kinetic energy increases. B. Kinetic energy equals gravitational potential energy. C. Kinetic energy increases; gravitational potential energy decreases. D. The mass of the ball is required to answer this.

If a car travels 30.0 mi. north for 30.0 min., 50.0 mi. east for 1.00 hour, and 30.0 mi. south for 30.0 min., what is the average speed of the car over the total trip

Answers

Speed = (total distance covered) / (time to cover the distance) .

The direction at any time during the trip doesn't matter.

This car traveled  (30mi + 50mi + 30mi) = 110 miles .

The trip took  (30min + 60min + 30min) = 120 minutes

The average speed for the trip was

                           (110 miles) / (120 minutes)

                      =    (110 miles) / (2 hours)

                      =              55 miles/hour  .

Answer:

the answer is 55 mph

Explanation:

hope this helped

An explosion that destroys a massive star is called a A. nebula.
B. supernova.
C. black hole.
D. vacuum.

Answers

An explosion that destroys a massive star is called a supernova ........the answer is B) supernova

88.0 km to m (in physics prefixes )

Answers

We know that,

kilometre = 1000 metre

1000 can be written as 10³ which is kilo.

Given,

88.0km = 88.0×1000

= 88.0×10³m

In Kepler's model of the solar system, the planets move around the Sun in _________ orbits.a. circular
b. elliptical
c. epicyclic
d. continuously changing

Answers

b. elliptical.

The planets move in elliptical orbits round the Sun.

Answer:

B) elliptical

Explanation:

How does a parallel circuit differ from a series circuit? A. A parallel circuit has one path for electrons, but a series circuit has more than one path. B. A series circuit has one path for electrons, but a parallel circuit has more than one path. C. A parallel circuit includes more than one resistor, but a series circuit has one resistor. D. A parallel circuit has a power source,

Answers

A series circuit has only one path for current,
while a parallel circuit has more than one.

Answer:

A series circuit

Explanation:

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.Which best explains why Denise had fewer injuries to the area of her body that hit the grass? The grass did not exert a reaction force.
The grass did not exert an action force.
The grass shortens the time of the collision.
The grass extends the time of the collision.

Answers

Answer : Because the grass extends the time of the collision.

Explanation :

Denise is riding her bike and falls to the ground. During the collision, she hits both grass and cement.

He had fewer injuries to the area of her body that hit the grass because the grass extends the time of the collision and hence it imparts less impulse.

i.e. I=(F)/(t)

Where

F is the force

t is the time of collision

Hence, the correct option is (d) " The grass extends the time of the collision ".
The grass extends the time of the collision
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What is a caliper used for?