1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tatuchka [14]
3 years ago
14

For life to flourish on Earth, several changes occurred that affected the atmosphere, such as _____.

Physics
1 answer:
e-lub [12.9K]3 years ago
8 0
Evolution of cyanobacteria that produce O2volcanic outgassing to create a thicker atmosphereformation of an ozone layer to block harmful radiationall of the above<span>only a and c

Are the options</span>
You might be interested in
When an object is stationary, all of the forces acting on it are balanced
Leviafan [203]
With utmost clarity, that is truest of the truths

5 0
3 years ago
Read 2 more answers
What type of relationship exists between acceleration and mass?
likoan [24]
Here, you can derive that by numerical method, as follows:
F = m.a
m = F/a

So, here we can see when we decrease one, other increase by same effect; we can say they are "Indirectly Proportional" to each other!

Hope this helps!
7 0
3 years ago
What happen when a star dies?
Vera_Pavlovna [14]
It depends on the size of the star. If it's size was normal then it cools down into White dwarf, then a black dwarf. If a really huge star dies, then we can see a "Supernova" from that.

Hope this helps!!
7 0
3 years ago
an object moving at 10. km/hr has a kinetic energy of 10. J. what is the kinetic energy of the same object if it is moving at 20
Schach [20]
Kinetic energy is related to velocity by:
KE = (1/2)mv^2

solve for mass m
10 = (1/2)m(10)^2
10 = (1/2)m(100)
10= 50m
10/50 = m
1/5 = m

at 20 km/hr

KE = (1/2)(1/5)(20)^2
KE = (1/10)(400)
KE = 40 J
5 0
3 years ago
Ele is playing with a ball in a bus that moves in a straight line with constant velocity What can you say about the motion of th
cupoosta [38]

Answer:

The ball will fall back and land to Elle's hands.

Explanation:

The bus move in a straight line with constant velocity means that there is no change of direction and no acceleration. Inertia can change the direction of the ball and acceleration can change its velocity. Since these two factors is not present in this scenario, the ball only has vertical movement. Thus the ball will land where it was thrown, in Elle's hands.

6 0
3 years ago
Other questions:
  • Please hurry need ASAP!!! When a pendulum swings, at which point is kinetic energy highest?
    9·1 answer
  • The amount of water in reservoirs is often measured in acre-ft. one acre-ft is a volume that covers an area of one acre to a dep
    9·2 answers
  • A dog sees a cat and runs for 10 s at 4.8 m/s before the cat runs up a tree
    9·1 answer
  • Is baking soda less dense or more dense than water?
    6·1 answer
  • In beachville, the last high tide occurred at 1:00 p.m. the next high tide will happen around _____. 1:25
    13·2 answers
  • a croquet ball, after being hit by a mallet,slows down and stops. do the velocity and acceleration of the ball have the same sig
    12·1 answer
  • A Ferris wheel car is moving in a circular path at a constant speed. Is the car accelerating?
    9·1 answer
  • A 500 500500- kg kgstart text, k, g, end text object is accelerating to the right at 10 cm / s 2 10 cm/s 2 10, start text, space
    8·2 answers
  • Mary Jo went on riding her horse through the trails. Her pace was 8 km/hr. She left at 8:30 am and got back to the barn at 9:00
    10·1 answer
  • Erosion and Weathering can cause changes in earths surface but how does erosion alone changes the earth surface.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!