If you were a scientist trying to separate pollution molecules from the air, how might you do it? (This question appears on page 23 of Break It Down.)

Answer:

include passage 23 of break it down plz then ill answer in the comments

Explanation:

Earth's atmosphere is composed of
A.
iron, oxygen, and silicon.
B.
nitrogen, oxygen, and trace amounts of other gases.
C.
water, liquid oxygen, and trace amounts of other liquids.
D.
carbon dioxide, ozone, and magnesium.

Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?

Which is a resource that the National Park Service manages?
A. memorials
B. wildlife refuges
C. ecosystems
D. endangered species

Please help with question!

please help no trolls no links pls
How does changing the mass of a wheelchair affect its velocity?

The Northern and Southern Hemispheres always have opposite seasons.
A true
B false

How are the poles different than the equator?

A. The poles are colder than the equator.
B. The Sun hits the poles at an angle while the Sun hits the equator head-on.
C. There is great variation in the daytime and nighttime hours at the poles, which is not true for the equator
D. All of the above

Connecting many devices in a single socket does not affect the flow of current in a
circuit. True or False

Give one example when it might be important to know how much gravitational potential energy is stored by an object. Why is it important?

Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity

PLZ help this should be super easy

Edward deposited ​$10,000 into a savings account 5 years ago. The simple interest rate is ​3%. How much money did earn in​ interest?

HELP!!
How does Dr. Hayes' and Dr. Malaska’s research differ? Why are both research projects important?

a space station looks like a large wheel. the wheel rotates constantly. the inside of the wheel is the floor of the space station. this spinning motion simulates gravity. explain how this works.
a) the spinning motion simulates the rotation of the earth
b) astronauts must push on the floor and apply force on it to make it move
c) all object in the space station require a force from the floor or they would not move
d) circular motion requires acceleration to change direction. this is created by a force that the floor exerts on objects on the inside of the wheel

Any other Gypresgions come from shakespeare and are they used today?

Explain the events that would cause these changes in velocity. For each claim, describe the thruster force and how that would result in the pod moving away from the station.

Claim 1: The thrusters caused the pod to move in the opposite direction.
Claim 2: The thrusters only slowed the pod, it didn’t stop; the pod hit the space station, which made it bounce and move in the opposite direction.

Claim 1 question: Firing the thrusters would have caused the pod to move in the opposite direction if . . .

Claim 2 Question: Firing the thrusters only slowed the pod, it didn’t stop; the pod hit the space station, which made it bounce and move in the opposite direction. This would happen if . . .

what is the amount of protons, neutrons, and electrons in the atom to make water

Why do most girls not like it when we call them cute? I have been woundering this for so long now.

Anyone know the answers?

Lab Report
Motion and Forces
It’s time to complete your Lab Report. Save the lab to your computer with the correct unit number, lab name, and your name at the end of the file name (e.g., U4_ Lab_MotionAndForces_Alice_Jones.doc).
Introduction
What was the purpose purpose of the experiment?
The purpose of the experiment is to test the hypothesis.
What were the independent, dependent, and control variables in your investigation? Describe the variables for each part of the experiment.


Write a hypothesis based on observations and scientific principles.
Type your answer here:
Experimental Methods
What tools did you use to collect your data?
Questionnaires and observations.
Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.
Type your answer here:
Data and Observations
Record your observations.
Type your answer here:
Conclusions
What conclusions can you draw about how the sum of forces acting on an object affect its motion? Write an evidence-based claim.
Type your answer here:
Which mass, A, B, or C, was the greatest? Use the observations from your experiment and your knowledge of Newton’s laws of motion to write an evidence-based claim.
Type your answer here:
Make a model that shows the forces acting on two blocks on a flat, frictionless surface:
A 1 N block at rest
A 1 N block with 2 N of force applied in one horizontal direction
Include arrows to represent the forces and labels to indicate the magnitude of each force. Use your model to compare and explain the motion of each block.
Type your answer here:

helpppppppppppppppppp

This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system. In other words, in a chemical reaction, the mass of the products will always be equal to the mass of the reactants.

Apparent brightness depends on which two properties?
A. Distance and temperature
B. Luminosity and distance
C. Luminosity and temperature
D. Luminosity and size

4.16 Lab: Motion and Forces

LOOK AT THE PHOTOS BELOW

A meteor falls toward Earth's surface. Given that the acceleration due to
gravity is 9.8 m/s^2, what is the meteor's potential energy if it has a mass of 10
kg at an altitude of 400 m?
O A. 408 J
O B. 7,840,000 J
O C. 2J
O D. 39,200 J

LOOKING FOR ALL YOU SCIENTISTS!!
What advice would you give a teen wanting to go into the STEM field??

An object that is dropped has the most kinetic energy...


A. It does not have kinetic energy


B. When it starts to fall


C. Resting on the shelf


D. Just before it hits the ground

Remembering the Battle of Bunker Hill what did general Harry and his troops do

I'LL MARK BRAINLIEST PLZ HELP MEH I NEED IT RN I'LL BE YOUR FRIEND TOO *sniff*
what is a fossil fern providing evidence the continents once were joined (science)

help me with this please​

Please select the word from the list that best fits the definition

Gives a pictorial indication of how far and fast an object has moved
a. speed
b. velocity
c. frame of reference