Answer:
Explanation:
__3__ Anton van Leeuwenhoek observed small organisms he called “animalcules.”
___2___ Robert Hooke was the first to use the word “cell.”
___4___ Matthias Schleiden theorized that plants are made of cells.
___5___ Theodor Schwann theorized that animals are made of cells.
___1___ Hans and Zacharias Janssen created the first microscope.
___6___ Rudolf Virchow theorized that cells come from other pre-existing cells
Which ocean depth has some illumination but not enough for plant photosynthesis?
epipelagic zone
abyssopelagic zone
bathypelagic zone
mesopelagic zone
Answer:
c abyssopelagic zone
Explanation:
Answer:
the answer is D. Mesopelagic Zone
Explanation:
i know the answer is the 'Twilight Zone,' but its scientific name is the Mesopelagic Zone
Use this picture to explain that an electrically charged object can attract an uncharged object without any contact. Your answer should be at least three sentences long.
a balloon hanging from a string with small pieces of paper stuck to the bottom of it, with a few pieces on the ground
Answer:
Charges: positive and negative
Explanation:
When we put a charged object near an uncharged object, it produces opposite charges in the near end of the uncharged object by electric induction. In the figure, we can see that the ballon has charges which produces opposite charges in the paper which is uncharged
Which →two← factors decrease as the kinetic energy of the particles in an object decreases?
a
The object's weight.
b
The object's temperature.
c
The speed of the particles.
d
The size of the particles.
Answer:
a and c
Explanation:
I'm only sure on a but c is the second best so Yea don't completely trust it
Help me and only answer if u know the answer.
In which pair of elements are both metalloids?
Sn and Sb
Sb and Te
Te and I
I and Xe
Answer:
Sb and Te
Explanation:
there are on the stair step
Plz help 10 points!!!!!!
Answer:
Where are all my chemistry geniuses at??
1. 2HG + O2 = 2HGO
2. Ca + 2H2O = Ca(OH)2 + H2
3. H2 + Cl2 = 2HCl
4. Fe + S = FeS
Explanation:
Hope it helped!
Answer:
Mercury and oxygen react to yield mercuric oxide. > 2Hg + O2 = 2HgO
Calcium and water react to yield calcium hydroxide and hydrogen. > Ca + 2H2O = Ca(OH)2 + H2
Hydrogen and chlorine react to yield hydrochloric acid. > H2 + Cl2 = 2HCl
Iron and sulfer react to yield iron sulfide. > Fe + S = FeS
Explanation:
Hi if u see this help me please
Answer:
Amoebas, Yeasts, Hydras, and Ferns only
Explanation:
This is because they can asexually reproduce which is why their offspring wil be identical
Answer:
Amoebas, yeasts, hydras, and ferns
Explanation:
Based on the food web, which of the following would occur if the snake population was to increase?
a
The hawk population would increase
b
The mouse population would increase
c
The hawk population would decrease
d
The grasshopper population would decrease
Answer:
c i think
Explanation:
becuse hawks hunt snakes for food aslo becuse
Answer:
its A. The hawk population would increase
Explanation:
because if there is alot of snakes then the hawks will have more to eat
think of another way that people can detect carbon monoxide is in the air
Answer:
YOu fart
Explanation:
gas
What makes the Noble Gases the least reactive elements on the periodic table?
They all have one valence electron in their outer shell.
They all have seven electrons in their outer shell.
They all have eight valence electrons in their outer shell.
All of the elements have a full outer electron shell.
sorry im slow yall
The reason the Noble Gases, the least reactive elements on the periodic table, are they all have eight valence electrons in their outer shell. The correct option is C.
What are noble gases?Noble gases are the gases of the periodic table that contain a fully filled last orbital with electrons, that is why they are called noble gases. These gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn).
Noble gases are the least reactive elements because they have fully filled the last orbital, which means they do not need any electrons from others, nor do they have to donate any electron to fulfilled their orbitals.
Elements react with each other by sharing electrons with each other. They either donate or accept electrons from others and form bonds with each other.
Thus, the correct option is C. They all have eight valence electrons in their outer shell.
To learn more about noble gases, refer to the link:
https://brainly.com/question/11764545
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Giving brainliest to right answer
Answer:
Answer:
... it's b - 5°C..........
Answer:
B. -5°C Is most likely that outdoor temperature
Explanation:
Because if it was 30°C it most likely wouldn't have snow. Choices C and D look like temperatures...
Sasha placed a few objects one by one near a magnet. Only two of the objects Sasha placed moved toward the magnet. Which of the following are most likely to be those two objects?
possible answer: 1. Aluminum foil and iron nails
2. Metal paper clip and iron nails
3. Rubber band and plastic spoon
4. Steel spoon and rubber band
Answer:
.
Explanation:
Answer:
#2 Metal paper clip and iron nails
Explanation:
This is because they are both magnetic. Hope this helps. :)
A new mineral in the mine is very exciting news. On Dr. Rock's next survey report, he gets to update the number of known minerals to come out of the mine from 15 to 16! This is just one more reason that Dr. Rock's mine is a unique place on Earth.
How can the idea that different minerals are formed in different environments provide evidence for energy and matter cycling?
Which phase of matter can be described as having molecules that are tightly packed together with a definite shape?
A. gas
B. solid
C. plasma
D. liquid
Answer:
D. Liquid
Explanation:
Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles. It will take the shape of its container.
Which of the following would occur if the Thrush population was to suddenly decrease?
a
The population of Eagles would increase
b
The population of Eagles would decrease
c
The population of Dragonfly would decrease
d
The population of corn would increase
After an impact involving a non-functioning satellite, a paint chip leaves the surface of the satellite at a speed of 96 m/s. After 17 seconds, how far has the chip traveled?
Answer:
1,632 meters.
Explanation:
Answer:
1,632 m i think
Explanation:
m = meters
In the Bohr model of an atom (shown), protons are represented in blue, the neutrons are red and the electrons are green. How reactive is the element that this model represents?
Non-reactive because the model is showing two complete electron shells
Highly reactive because the model has two complete electron shells
Non-rective because the model is showing only one valence electron
Highly reactive because the model is showing only one valence electron.
Answer:
2nd one I think
Explanation:
hope this helps
Help me please and only answer if you know what the answer is
What s the highest viscosity?
Shampoo
Pure Water
Toothpaste
Soapy Water
PLz help
Which of the following groups of resources helps generate electricity and does not cause a lot of pollution?
possible answer: 1. Phosphate, oil, and water
2. Phosphate, oil, and silica
3. Wind, solar, and silica
4. Wind, solar, and water
Answer:
4
Explanation:
wind is used to run wind mills
solar the sun ray are converted into electricity using solar panel
water produces hydropower
Fill in the missing properties in the table below. pleaseeeeeeeeeeeeeeeeee helpppppppppppp
streak, hardness, crystal form
reaction with acid, magnetism, specific gravity, tenacity, taste, odor , feel, and presence of striations
Answer:
3. Mohs hardness scale
4. Streak
5. Density
6. Crystal
Explanation:
I hope this helps :)
What is true about all matter?
It is made up of mixtures.
It has the same characteristics.
It has mass and takes up space.
It is made up molecules.
Answer:
It has mass and takes up space
Explanation:
Just did something similar like this 10 minutes ago lol
A student climbed up the hill at a constant speed, stopped at the top, and then ran quickly down the other side.
Which graph below most likely represents this scenario?
Answer:
The Answer Is C
Explanation:
Compare how a positively charged object and a negatively charged object will react when each is placed separately near an uncharged object.
help me- i hate science sm-
3. The cities listed below, from Chicago to Pittsburgh, lie in a roughly straight west to east line. Data on temperature, barometric pressure, and sky conditions for each city are shown in the table below. Use the data to explain what types of air masses are present and/or moving among these cities and how this accounts for the weather. What will Pittsburgh’s weather be like within the next 24 to 48 hours?
City Temp (oF) Pressure (in.) Conditions
Chicago, IL 73 29.94 rising Clear
Indianapolis, IN 75 29.93 falling Partly cloudy
Columbus, OH 78 28.20 falling Light rain
Pittsburgh, PA 74 29.90 steady Mostly sunny
Answer:
For the next 24-48 hours, Pittsburgh will see light rain. The storm is moving west-to-east toward Pittsburgh, as indicated by a drop in pressure over western cities. Precipitation is usually associated with low pressure systems.
What is weather forecasting?Weather forecasting is the application of science and technology to predict atmospheric conditions at a particular place and time.People have been trying to predict the weather informally for thousands of years, but have been doing so formally since the 19th century.Weather forecasting is the application of science and technology to predict atmospheric conditions for a particular place and time.Humans have tried to predict the weather informally for thousands of years, but only formally since the 19th century due to incomplete understanding of the ocean, measurement errors in initial conditions, atmosphere and related processes.Weather warnings are important forecasts that protect lives and property.Forecasts based on temperature and precipitation are important for agriculture and therefore for commodity market traders. Temperature forecasts are used by utility companies to forecast demand for the next few days.Many people use the daily weather forecast to decide what to wear on any given day.To learn more about weather forecasting, refer to:
brainly.com/question/24730207
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A student is trying to lift a metal ball off the floor. The student is unable to lift the ball after several tries. Which of the following forces is most likely opposing lifting the ball?
possible answer: 1. Electric force
2. Frictional force
3. Gravitational force
4. Magnetic force
Answer:
i think it is three
Explanation:
it is a meatal ball soits going to be heavy and if it was 1 than his hands would be electricuted and its a meatal ball so if it is stationar than it should have no friction and if it had magnetic force aplied than it would be roling
Answer:
3
Explanation:
Which Item is denser than liquid water?
A. Metal fork
B. Plastic cup
C. Paper plate
D. Wooden spoon
Answer:
B
Explanation:
metal is denser, wood will float and so will paper and plastic
Plz answer in order and no wasting my points
Answer:
1. Fossil Fuels
2. Burning Fossil Fuels
3. Photosynthesis
4. Plants
5. Deforestation
6. Rivers
7. Atmosphere
Explanation:
I am only sure about 1, 2, and 6 because it is very blurry.
Hope this helped!
Which two factors decrease as the kinetic energy of the particles in an object decreases?
giving brainliest
a
The object's weight.
b
The object's temperature.
c
The speed of the particles.
d
The size of the particles.
Answer
ummm maybe c or d
dont count on me though!
Explanation: