According to the fossil record, how long ago do scientists believe life on Earth first appeared?
Answer:
B
Explanation:
We know that life began at least 3.5 billion years ago, because that is the age of the oldest rocks with fossil evidence of life on earth.
Chickens express three variations for feather color: white, black, and black and white speckled. The genotypes are below:
WW = white
BB = black
WB or BW = black and white speckled
Which conclusions about these two traits are valid?
Answer:
B. White feather color is dominant and black color is recessive.
Explanation:
White people were dominant over blacks in the 17th century to right now. The whites have more power over blacks.
hope this helps.
help pleas im super slow i hate science
Answer:
I think it's option c 'Biotic and Abiotic'what is the answer to this definition?;
a positive or negative electrical quality.
Answer:
charge is the answer I'm pretty sure
In 14 days, the daily high temperature in Cedar Hills dropped by 16.8 degrees Fahrenheit. What is the average daily rate of change in the high temperature in degrees Fahrenheit?
A. +2.2
B. +1.2
C. +1.1
D. -1.2
E. -2.2
Answer:
B
Explanation:
Divide 16.8 by 14
What type of plate boundary is in the image below?
Divergent
Convergent
Transform
How are seatbelts related to inertia? Write you answer in complete sentences.
I need answer asap!!!
Answer:
Seat belts are in cars to the effects of inertia. ... When the car hits the wall, you would keep moving in a straight line and at a constant speed until the dashboard applies a force. Seat belts hold you and passengers down, protecting them from their own inertia.
Explanation:
their is the answer so okay
Answer:
Inertia is the tendency of an object to resist a change in velocity.
When a car stops suddenly, your body is still going at the same speed the car was before it stopped (say 65 MPH). Without the belt strapping you in from behind, you would fly forward at nearly that same speed (65).
But thanks to the seatbelt, it stops your body's inertia.
What makes greenhouse gases different from other atmospheric gases?
Greenhouse gases reduce the amount of natural resources on Earth.
Greenhouse gases allow thermal energy to pass through the atmosphere and back out into space.
Greenhouse gases account for the direction in which water and air move.
Greenhouse gases trap thermal energy and reflect the sun’s harmful radiation back to Earth.
Greenhouse gases are different from other atmospheric gases for the following reason:
Greenhouse gases trap thermal energy and reflect the sun’s harmful radiation back to Earth.Thus, the correct option is D.
What are greenhouse gases?Greenhouse gases may be defined as those gases that absorb infrared radiations which are competent to trap heat. Some examples of greenhouse gases are carbon dioxide, methane, CFCs, nitrous oxide, etc.
Greenhouse gases are more complex as compared to other gas molecules in the atmosphere. It has a structure that makes such gases more competent to absorb heat and radiate back to the Earth's surface. These gases trap the ultraviolet radiation from the sun and emit toward the earth's surface. Such gases are responsible for greenhouse effect.
Greenhouse gases are harmful to the environment as well as the health of living entities that constantly living in various ecosystems of the environment.
Therefore, the correct option for this question is D.
To learn more about Greenhouse gases, refer to the link:
https://brainly.com/question/21106299
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Match each type of fossil to the description that best matches.
What causes polar jet streams to form?
Ocean currents change the temperature of air masses. Cold ocean currents transport heat from the equator to the poles.
Ocean currents change the temperature of landmasses. Cold ocean currents transport heat from the equator to the poles.
Ocean currents change the temperature of landmasses. Warm ocean currents transport heat from the equator to the poles.
Ocean currents change the temperature of air masses. Warm ocean currents transport heat from the equator to the poles.
Answer:
i think that it is the last one: Ocean currents change the temperature of air masses. Warm ocean currents transport heat from the equator to the poles.
Explanation:
hope this helps!
Place the steps of sexual reproduction in order starting with the first step at the top.
Answer:
1, 3, 2, 4
Explanation:
Hope this helps. :)
In which direction does friction act?
1. in the same direction as the motion
2. at right angles with the motion
3. the opposite of the direction of motion
First one to answer will get a brainliest!
Answer:
3. the opposite of the direction of motion
Explanation:
this is to slow down the movement of the object sliding on a surface
Match each type of fossil to the description that best matches.
Answer:
1. B. 2. D. 3. A. C.
Explanation:
That's the best I could do. With it so blurry.
What two processes are involved in sexual reproduction, but not asexual reproduction, that increase genetic diversity?
Choose all that apply.
Explanation:
A B C these are the answer
Answer:
C, Meiosis and fertilisation
Explanation:
Mitosis happens in both animals and plants with their cells, thus the only answer without mitosis is correct. :)
the photo shows a frozen fruit pop on a hot day. in which direction in thermal energy flowing
Answer:
The answer is A.
Explanation:
Which of these is known as a push or pull upon an object that results from its interaction with another object?
Please choose the one below.
speed
velocity
acceleration
force
Answer: it is force
Explanation: bro comeeeeeeeeeeee on please does this platform actually have challenging questions.
IT IS EASY PLEASE GO AND STUDY AND STUFF CHEATING
Which best describes the relationship between chromosomes, genes, and inherited traits?
Answer:
Genes are located within chromosomes. Genes determine the passing and expression of inherited traits from parent to offspring.
Explanation:
YW!
Lauren wants to know which location in her apartment is best for growing African violets. She has three African violets. She puts one on the balcony, one by the kitchen windows, and one on the mantel in the living room. Each plant has the same pot and the same soil, and Lauren gives each plant the same amount of water. Which is the independent variable?
Answer:
First, before determining which variable is which, we go over the definition of each. The independent variable is the one which is intentionally changed in order to investigate its effect on the dependent variable. The dependent variable is monitored and changes occur in it due to the changing conditions of the independent variable. In this case, the location of the African violets is the independent variable as it is intentionally changed, while the rate of growth of the African violets is the dependent variable as it is being measured.
plz help me now !!!!!!!!!!!!!!!!!!!!
Answer:
imagine 2
Explanation:
tha is the answer
Answer:
I think the answer is image 2
Explanation:
PLZ HURRY 5 MINUTES LEFT
03.05 The Atmosphere and You Lab Report
1. Summarize how the carbon emissions affected the atmospheric temperature in each of the three scenarios:
o Scenario One:
o Scenario Two: Carbon dioxide emissions decrease
o Scenario Three:
PLZ HELP I NEED 1 AND 3
Answer:
This is fun youyr are best I am worst this means your happy but I am not
Explanation:
This is fun more than you and I think it's better than today and tomorrow so that's why this will be fun this question is long and the answer is short. Thanks to brainly and my brain
The following table was made to compare rocks and minerals. What information in the table needs to be corrected?
A. Rocks do have specific chemical compositions and minerals do not have specific chemical compositions.
B. Rocks include granite and marble, minerals include quartz and diamond.
C. Rocks do have specific chemical compositions and minerals do as well.
D. Rocks include quartz and diamond, minerals include granite and marble.
The correction that is needed to be made is that rocks do have specific chemical compositions and minerals do as well. The correct option is C.
What are minerals?Minerals are elements found on the Earth and also in foods which our bodies require for normal development and function.
Minerals generally have certain specific chemical compositions, but it is not in case of rocks.
Thus, the correct option is C.
For more details regarding minerals, visit:
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If a truck that is traveling at 15 mph speeds up to 45 mph in 10 seconds, what is the truck’s acceleration?
PLZ HELP!!!! I NEED A ANSWER AND THE FIRST ONE TO ANSWER WILL GET A BRAINLIEST!!!!
Answer:
3miles per hour^2
Step-by-step explanation:
given data
initial speed u= 15mph
final speed v=45mph
time taken t= 10 seconds
Step two:
Required
acceleration a=?
applying the first equation of motion
v=u+at
substitute we have
45=15+a*10
45=15+10a
make a subject of the formula
45-15=10a
30=10a
divide both sides by 10
a=30/10
a=3miles per hour^2
Answer:
3m/s
Explanation:
15mph is the intial and 45 is the final subtract them and divide by ten
can someone tell me for these 2 questions
Answer:
Enzymes
Stamen
Explanation:
You're correct for the first question, the second question's answer is Stamen.
Which is the youngest rock in this strata?
mudstone
siltstone
limestone
sandstone
conglomerate
Answer:
I think it is sand stone I hope it is right
A student is trying to make a structure to conduct heat quickly during cold winter days.
Which material should the student use?
A. wood
B. plastic
C. glass
D. metal
A student who is trying to make a structure to conduct heat quickly during cold winter days. The student should use metal for heat conduction. Thus, the correct option is D.
What are metals?
A metal is a material which is when prepared freshly, polished, or fractured, shows the lustrous appearance, and also conducts electricity and heat relatively well through them. Metals are typically ductile in nature i.e., can be deformed into a thin wire and malleable. All of these properties are the result of the metallic bond which is present between the atoms or molecules of the metal.
Metals are the cationic elements. These are positively charged due to the loss of electrons from the valence shells. There are about 70 metals out of 92 natural elements present in the periodic table.
Therefore, the correct option is D.
Learn more about Metal here:
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HURRY UP PLSS! Complete the passage to summarize factors affecting the speed of a wave.
The material or substance that a wave moves through is called a _____.
. The medium affects the speed of the wave that passes through it. One factor that affects the speed of a wave is the _____
of medium. Some waves move faster in solids and some waves move faster in liquids and gases. Another factor that affects wave speed is the ________
of the medium.
Answer:
1. medium
2. Type
3. Temperature
got the answer from brainly
Answer:
The material or substance that a wave moves through is called a medium.
The medium affects the speed of the wave that passes through it. One factor that affects the speed of a wave is the Type.
of medium. Some waves move faster in solids and some waves move faster in liquids and gases. Another factor that affects wave speed is the Temperature of the medium.
Explanation:
im not copying anyone, im just putting this up there so that the one who is the owner of these words in Bolded text gets the reward not me.
Answer the question below i give brainliest
Answer:
The team members shared their graph with other sports teams at their school.
Explanation:
This sentence talks about them sharing (COMMUNICATING THEIR RESULTS) to other teams of the same school. The other sentences say what they did for the experiment and what happened.
pls mark brainliest and happy new year!
Answer: The team members shared their graph with other sport teams at their school
this part of the passage describes communicating the findings
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Characteristics of physical properties include: (check all that apply)
Group of answer choices
B. Properties that can be observed without changing the identity of the object or substance
A. Properties that we see through a change of color
D. None of these
C. Color, shape, size, density, density
How do you know that an object in space is moving through the sky?
Answer:
See explanation
Explanation:
Objects in the sky could really be moving. You and tell if you stand vary still and focus on the object. Or they reflect our motion through space, which makes it look like the object is moving.
Need help pls due
Pls help
Answer:
This may be the case because of the placements of the spread. While one is more cluttered, the other is a bit more spread apart. Meaning that the GeoChart on the right must have more cases, exactly because of their population.