According to the fossil record, how long ago do scientists believe life on Earth first appeared?
Answers
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.
Related Questions
If the normal body cells of an organism each contain 36 chromosomes, how many chromosomes would be found in a gamete produced by that organism?
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Answer the question below i give brainliest
Answers
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
pls mark me brainiest
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.
Answers
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.
EN QUE LUGAR SE HA ENCONTRADO UNA COMUNIDAD DE ANIMALES
DOY CORONA <3
Answers
Which of the following traits are environmentally caused and not passed from parent to offspring genetically?
Answers
Answer:
A
D
Explanation:
languages and problem solving skill can be learned. but eye color and earlobe shape cannot.
A manual contains instructions for how to build a variety of structures using a set of interlocking bricks. If this scenario is used as a model for genetic information, which statement is correct?
A, Each set of instructions is a protein
B, Each structure is a gene
C, The manual is a chromosome
Answers
Answer:
b
Explanation:
b Each structure is a gene
A manual which contains all the instructions for how to build a variety of structures using a set of interlocking bricks, in this model the manual is a chromosome. Thus, the correct option is C.
What is Chromosome?The chromosomes are the building blocks of the genetic code. A manual contains all the instructions regarding how to build blocks or proteins in case of body of an organism and is also used to make models for genetic information.
At the functional level of genes, DNA contains all instruction manuals that describes the cells information. These genes are transferred during the process of fertilization and are passed on to the offspring.
Therefore, the correct option is C.
Learn more about Chromosome here:
https://brainly.com/question/1596925
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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
Answers
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
Topsoil is made up mostly made up of what ingredient? HURRY PLS!!! I will give Brainiest
A. rock and mineral particles
B.millions of animals
C. 5 billion microorganisms
D. 100 miles of root hairs
Correct answer = Brainliest
Answers
A, this is my guess because topsoil is made mostly of humus(sand, silt, clay and broken down organic matter) and the rest of the answers don’t make sense, hope this helps :]
I’m not sure what quiz this is but I remember getting this right on my chemistry quiz.
Which statement describes an advantage of an organism that asexually reproduces as compared to an organism that sexually reproduces?
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help pleas im super slow i hate science
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Answer:
I think it's option c 'Biotic and Abiotic'what is the answer to this definition?;
a positive or negative electrical quality.
Answers
Answer:
charge is the answer I'm pretty sure
Can someone help? Ty!
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Answer:
sedimentary rocks are laid down in layers called bed or strata
Explanation:
beds or strata
Match each type of fossil to the description that best matches.
Answers
Answer:
1. B. 2. D. 3. A. C.
Explanation:
That's the best I could do. With it so blurry.
A wave of infrared light has a speed of 6 m/s and a wavelength of 12 m. What is the frequency of this wave?
A. 0.5 Hz ✅
B. 2.0 Hz
C. 18 Hz
D. 72 Hz
Answers
Answer:
Explanation:
The frequency of the wave is 0.5 hertz.
La frecuencia de la onda es de 0,5 hercios.
Answer:
A. 0.5 Hz.
Explanation:
I know you got the answer, but plz mark me as brainliest. I need a lot of those.
Which is the youngest rock in this strata?
mudstone
siltstone
limestone
sandstone
conglomerate
Answers
Answer:
I think it is sand stone I hope it is right
Other than coral bleaching , what are other effects of the increased heat and carbon dioxide absorption by oceans ?
A: Depletion of fish stocks
B: Droughts
C: All of the above
D: Hurricanes
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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?
Answers
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.
How are seatbelts related to inertia? Write you answer in complete sentences.
I need answer asap!!!
Answers
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.
why unfavorable traits do not usually get passed to offspring? No links please
Answers
Answer:
traits that hinder survival eventually disappear
Explanation:
living things adapt to their surroundings
Check all locations where a pulse can be taken.
carotid
brachial
radial
femoral
popliteal
dorsalis pedis
Answers
Answer:
carotid
brachial
radial
femoral
popliteal
dorsalis pedis
Explanation:
These are all places where your pulse can be taken.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Place the steps of sexual reproduction in order starting with the first step at the top.
Answers
Answer:
1, 3, 2, 4
Explanation:
Hope this helps. :)
What are the segments of DNA that code for specific traits called?
Answers
Answer:
it would be C, genes.........
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.
Answers
Explanation:
Greenhouse gases are transparent to incoming (short-wave) radiation from the sun but block infrared (long-wave) radiation from leaving the Earth’s atmosphere
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:
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Alison finds the total mass of a sample of baking soda, a balloon, and a glass container with vinegar in it. She adds the baking soda to the vinegar and immediately places the balloon over the mouth of the container. After the reaction is complete, she again finds the total mass of the system.
Which statement is true:
1. The mass does not change because chemical changes observe the law of conservation of mass.
2. Mass is gained during the reaction because a chemical change is taking place.
3. Mass is lost during the reaction because the gas is less dense than the baking soda or vinegar.
4. Mass is lost during the reaction because the gas can change in volume but baking soda and vinegar cannot.
Answers
Answer:
2. Mass is gained during the reaction because a chemical change is taking place
Carryonlearning:)
How do you know that an object in space is moving through the sky?
Answers
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.
The inner core of the Earth is a metal spinning ball made of nickel and iron. It spins faster than the earth rotates and is hotter than the surface of
A. Mars
B.The Sun
C. Lava
Answers
Answer:b
Explanation:
Need help pls due
Pls help
Answers
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.
whats is the cell cycle and why is it so important to to our health? no links
Answers
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
Answers
Answer:
B
Explanation:
Divide 16.8 by 14
I hope not the best at this stuff
Genes are sections of DNA that code for a particular trait. Genes are. A carbohydrates B. lipids C. proteins D. nucleic acids PLEASE HURRY I WILL MARK BRAINLIEST