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Questions (158,029)
Which statement correctly describes the mesosphere?
A. Commercial airplanes fly through this layer. B. Meteors burn up in this
18 answers
asked by
OOOLO
3,907 views
Alpha Particles Emission Quick Check
A process in which a large nucleus splits into two or more parts is called _. A. Radioactive
7 answers
asked by
Samado
8,011 views
Evaluate the following statement and pick the option that correctly argues why this statement is incorrect. "Anaerobic and
3 answers
asked by
BLINKS
323 views
Eduardo has a 32-gallon fish tank. Describe what this measurement means.(1 point)
Responses It means his fish tank is too big. It
1 answer
asked anonymously
100 views
In the image, which animal is both a secondary and a tertiary consumer?
jackal rabbit wildcat lion
5 answers
asked by
Don't worry about it sweetheart
3,169 views
If the world came about after a "Big Bang", as some scientists say, how could the detail seen in nature be explained?
4 answers
asked by
OPps
1,144 views
What happens to molecules in air as altitude increases in the troposphere?
1. They stay at the same temperature. 2. They get
19 answers
asked by
Boy
5,511 views
What characteristic is shared by sunspots, solar flares, and coronal mass ejections? Select the two correct responses.(1 point)
A
2 answers
asked by
Connexus Student
227 views
Which example demonstrates divergence? (1 point)
8 answers
asked by
clueless
1,888 views
Which statement is the best description of the energy found in molecules of water?
A. Colder molecules have more kinetic energy.
10 answers
asked by
Samado
2,211 views
Explain how spectrometer works by drawing a labelled flow diagram showing the main components of spectrometer and briefly state
1 answer
asked anonymously
41 views
Which new idea did Copernicus introduce that significantly modified the geocentric model of the universe?
39 answers
asked by
nogobro
9,367 views
Drag the word to the description it matches.
What is the difference between climate and weather? day-to-day conditions, long-term
14 answers
asked by
Oof
4,864 views
you pick a leaf from the ground and fold it in half. you notice that the right side exactly lines up to the left side. this is
7 answers
asked by
Anonymous
3,186 views
The breathing process is controlled by (Select all that apply)
A. The diaphragm B. The pharynx C. Blood vessels D. rib muscles
15 answers
asked by
Karina
7,125 views
Use the equation to complete the activity. 21986 Rn→21584 Po+ Alpha The nuclear equation shows the transmutation of a form of
3 answers
asked by
hatemaths
98 views
Which is an example of a load in an electric circuit?(1 point)
Responses wiring wiring on-off lever on-off lever 9-volt battery
4 answers
asked by
the real BARNY THE DINO :)
399 views
The ratio of the diffusion rates of two gases is given by the formula r1/r2=square root m2/square root m1 wherem1 and m2 are the
10 answers
asked by
HELP PLZ
8,652 views
Which of the following taxonomic groups includes the greatest number of organisms?
domain species phylum family
13 answers
asked by
guy
2,175 views
Which of the following does NOT happen when vinegar and baking soda react?
true or False?
6 answers
asked by
Marcus
1,720 views
A science class is planning an investigation about gravity and objects on Earth. In three to four sentences, explain the steps
9 answers
asked by
Willie Lawson
2,271 views
How do the frequencies and the speeds of yellow light and blue light compare?(1 point)
Which of the following is the best answer?
25 answers
asked by
Iwannaknow
1,447 views
explain,using the kinetic theory what happens to the particles in oxygen as it is cooled down.
7 answers
asked by
fina
3,134 views
In one or two sentences, explain how the chemical equation for cellular respiration shows that plants cycle matter. Include the
22 answers
asked by
FNaF non-binary
5,027 views
xxxn
2 answers
asked by
9
137 views
A car travels 240km in 2hr. And the sprinter travels 100m in 9.5 seconds. which one is traveling faster and by how much ?
7 answers
asked by
brianna
8,190 views
Lesson 2 biology semester a exam
5 answers
asked by
Anonymous
3,521 views
Is exposure to natural radiation on earth dangerous?
A. Yes, because it is always present B. No, because it is natural C. No,
7 answers
asked by
Ooooh oooooh aaaaah aaaaaah 🦧🐒
644 views
True or False
Mechanical digestion is the process by which food is broken down and torn apart.
5 answers
asked by
Slim Shady
2,214 views
5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value
4 answers
asked by
Evie
4,199 views
Conservation of mass unit test please I need these answers asap!!
17 answers
asked by
Anonymous
2,618 views
What causes the change within every twenty-four hours from day to night on Earth?
(1 point) Responses Earth's rotation on its
1 answer
asked anonymously
60 views
Which phrase describes radioactive decay?(1 point)
the triggering of one reaction by the products of another the joining of small
10 answers
asked by
DesperateScienceHelper
3,978 views
A ringing alarm clock is put under a glass jar. The air is slowly removed from the space around it. What will happen as the air
10 answers
asked by
bobby
2,145 views
The Design World Unit Test
1,Which statement is true about the two metals used in batteries? The two metals have opposite
4 answers
asked by
Irisslove
1,422 views
Science fiction movies sometimes take place in space and contain scenes where things explode very loudly and brightly. Why is
10 answers
asked by
Please Help soon
2,972 views
Which of these types of EMR is the most harmful?
A) visible light B) infrared light C) microwaves D) radio waves Visible light
5 answers
asked by
PLS HELP IM STOOPID
1,018 views
The action of heat on lead (ii) trioxonitrate (v).which type of chemical reaction is this.
5 answers
asked by
Anonymous
2,728 views
On a small island, scientists observed and graphed changes in wolf and moose populations. From 1965 to 1970, which pattern did
4 answers
asked by
mimi
580 views
find the change in electrical potential energy of an electron as it moves from a distance r1=1.0cm to r2=3.0cm from a point
1 answer
asked by
juliet
345 views
What's the scientific term for a wire that gets longer due to heat?
5 answers
asked by
Botshelo
677 views
What's in a universe Quick Check. Which types of matter are most abundant in the universe?
7 answers
asked by
yoyoyo
2,469 views
Which statement best explains why levels of an energy pyramid do not have the same amount of energy?(1 point)
A. Plants need more
10 answers
asked by
sicko mode
2,200 views
Which statement correctly describes the relationship between thermal energy and particle movement?
As thermal energy increases,
79 answers
asked by
Anonymous
18,096 views
A student tracks the daily weather. The student’s observations are logged in the table. Which factor in the atmosphere best
66 answers
asked by
Anonymous
14,300 views
What happens after coral is bleached?(1 point)
The coral dies immediately. The coral is susceptible to starvation. The coral
9 answers
asked by
UNKNOWN -_-
1,495 views
Nuclear reactions can be written out in equation form with information about the nuclei that take place in the fusion reaction
6 answers
asked by
Lucid
4,058 views
Write the balanced equation for vandadium (II) oxide with iron (III) oxide results in vanadium (V) oxide and iron (II) oxide.
2VO
5 answers
asked by
Hayden
5,757 views
Which of the following statements about electrical charges is true?
Opposite electrical charges repel one another. Like charges
1 answer
asked anonymously
76 views
The picture shows a representation of fossil skulls. What do these skulls in the fossil record tell us about hominin evolution?
1 answer
asked by
zaddy
57 views
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