The oldest true fossils are trace fossils called Stromatolites found in Australia, and dated between 3.5 to 3.3 billion years old.
Raphael Baumgartner and their team have finally uncovered evidence of organic matter in the ancient rock formations known as stromatolites found at the Dresser Formation fossil site in the Pilbara region of Western Australia. They detail their findings in a new article published in the journal Geology.
With a variety of methods, including scanning electron microscopy, scanning transmission electron microscopy, energy dispersive X-ray spectroscopy, Raman spectroscopy, nano-scale secondary ion mass spectrometry, and stable carbon isotope analysis, the researchers examined the samples in thin slices.
According to the team's analyses, pyrite, a mineral with many tiny pores, makes up the majority of the stromatolites. Additionally, the pyrite contains nitrogen-bearing organic material and strands and filaments of organic material that closely resemble the remains of microbial biofilm colonies.
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which statement is true about population pyramid ?
b
ОООО
ro o
in developed countries the is more old people than young
population pyramid is of 3 types, increasing, declining and stable
in industrial countries like the US the biggest age range is 15-20
non of above
с
Plant cells also gain energy through cellular respiration. True False sm
Answer:
true
Explanation:
what are the advantages of using petroleum-based products?
Answer:
Petroleum is extremely easy to extract. ...
It is a high-density fuel. ...
Petroleum can be transported over long distances. ...
It provides a fuel that works with our infrastructure. ...
It can be used in a wide variety of ways. ...
Petroleum provides a stable energy resource.
A scientist is studying a worm. It is three millimeters long and pointed at each end. The worm is unsegmented and has only male reproductive structures.
Which kind of worm is the scientist most likely studying?
a tapeworm
a flatworm
a roundworm
an earthworm
Answer:
i think the answer is c roundworms
Explanation:
i know im right becausee i made a 90% with this being right
Answer:
a roundworm
Explanation:
I got the answer right on quiz .
2. A food web explains why there are more _____. It is because more energy is available to _____. A. Decomposers than consumers / consumers b. Producers than decomposers / consumers c. Consumers than producers / producers d. Producers than consumers / producers
Answer:
D
Explanation:
A food web explains why there are more producers than consumers. It is because more energy is available to producers.
The food web is a structural representation of the feeding relationship that exists among the living organisms in a particular environment.
A typical food web groups living organisms as producers, consumers, or decomposers. Producers are those that fix sunlight energy into chemical energy, a process known as photosynthesis while consumers are those that either feed on producers or other living organisms in the environment. The decomposers return both producers and consumers back to the earth and help nutrients circulate in the environment.
In a typical food web, producers are usually more than consumers because more energy is usually available at this level. Less and less energy becomes available as we move up the ladder in each food chain that makes up the food web.
The correct option is D.
2. The theory that shows that the Sun is in the center of the solar system is called
a. Geocentric Theory
b. Scientific Theory
C. Egocentric Theory
d. Heliocentric Theory
1 DNA unzips exposing nitrogen bases.
2 RNA nucleotides pair up with their corresponding DNA bases, copying the code.
3 mRNA carries the newly copied code out of the nucleus and to the ribosome.
4 tRNA brings the appropriate amino acids to the ribosome depending on the code.
5 A series of amino acids make up the newly formed proteins.
6 The proteins get to work!
Which of the above steps is Transcription?
Which of the above steps is Translation?
(Please answer ASAP)
Thanks for answering, I appreciate you for the help you have provided me! Enjoy your day/night.
Which factor is needed for both thunderstorms and hurricanes to form?
Answer:
C. rising moist air
Explanation:
for the storm to start/process it needs the moist air in order for both hurricanes and thunderstorms to happen, because the rotation with the moistness creates the storms.
Hope this helps
Answer:
rising, moist air
Explanation:
because it is i got it right on my test
Can you guys help me get the right answer please!?❤️
Answer:
b
Explanation:
hydrotropism is when the growth or turning of plant root towards or away from moist soil
BRAINLIEST Explain the difference between a scientific law and a scientific theory.
Answer:
A theory is a group of related hypotheses that can be accepted as true based on repeated investigations with similar results. A law is a scientific concept that explains what patterns of behavior will be seen through repeated investigations
Explanation:
sample response on edge
HELPPP ASAPPPP!!!! Plsssss
Answer:
Waxing gibbous
Answer:
waxing gibbous
Explanation:
Which statement describes how the atmosphere gains energy by convection?(1 point)
Air warmed by the ground rises.
The ground warms the air just above it.
Solar energy warms gases that make up the air.
Energy moves from the clouds to the air.
The statement that describes how the atmosphere gains energy by convection is : Air warmed by ground rises ( A )
The rising warm air from the ground into the atmosphere explains the exchange of heat energy from the ground into the atmosphere through convection and this possible due the variation in density and temperature of the ground air and the atmospheric air.
What is ConvectionConvection is the transfer of heat energy through the movement of a medium such as air or water from one region to another. convection can occur as :
Natural convection Forced convectionHence we can conclude that The statement that describes how the atmosphere gains energy by convection is Air warmed by ground rises
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Science cells pls help
Answer:
sou brasileira bem não posso ajudar ok
Which amino acids are coded for from the DNA sequence TACCAGCCA?
methionine, valine, and glycine
methionine, glutamine, and alanine
methionine, valine, and aspartic acid
arginine, histidine, and cysteine
Where do the instructions for building a protein originally come from?
tRNA
rRNA
DNA
mRNA
A _______________ is composed of a series of amino acids.
Molecule
Protein
Nucleotide
Cell
Explanation:
DNA
The instructions for building a protein originally come from DNA, which is the store for all hereditary information.
A protein is composed of a series of amino acid.
Can someone help please ? With explanation whoever ans gets branilest
Answer:
This makes absolutely no sense... but I'm gonna say the green box is the correct answer... I'm most likely wrong.
Explanation
I believe the 2nd option is correct specifically because plants reproduce asexually. With the pest species eating the plants, they wouldn't get very far before being eaten. That's really the only negative option, and pests cannot really eat things that sexually reproduce...
Help me please really quick
Answer:
D. electromagnetic energy
Answer:
C
Explanation:
mixed together they make helium which would be chemical
The Colorado River provides water and electricity for over 40 million people. But so much water is withdrawn from this river for agriculture/livestock and drinking water, that very little of it reaches the sea. Due to drought and overuse, it currently is drying up. This will be a major problem because crops and livestock in the USA depend on this water. What percent of the nation's crops and livestock rely on the river's water?
Answer:
About 80%
Explanation:
2. RNA polymerase is a type of enzyme. Enzymes help chemical reactions occur quickly. Click the Release enzyme button, and describe what happens.
Answer:
The nucleotides are split
Explanation:
With the release of enzyme, enzyme take part in the chemical reaction without utilizing in it.
When the enzyme release by any glands in the body, it attached to the substrate and speed up the chemical reaction without using in it. Once the chemical reaction ended, the enzyme which attached the substrate earlier detached and then attached other substrate in order to speed up the chemical reaction.
Without enzyme, chemical reaction occurs but at a very slower rate so we can conclude that with the release of enzyme, enzyme take part in the chemical reaction without utilizing in it.
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What will happen to the speed of a wagon rolling to the right if the direction of the net force is in the opposite direction to the left?
Answer:
the speed of a wagon rolling to the right if the direction of the net force is in the opposite direction to the left would decrease the speed of the wagon
Explanation:
Answer:
The wagon's speed increases to the left. ... The acceleration of an object moving along a curved path is constantly changing even if the speed is constant, because the direction of the object constantly changes.
What usually happens to a population of organisms when the region's carrying capacity has been reached?
Answer:
the population starts to slowly decline
Explanation:
The population will decline drastically because there is not enough resources to sustain the population or increase the population.
Grace and Carlos are going for a walk the temperature is -15°C with wins at 10 to 12 mph what should I wear
What describes the conversion of ADP to ATP?
A)an input of energy as both phosphate groups detach
B)a release of energy as one phosphate group detached
C) a release of energy as a third phosphate group is attached
D) an input of energy to attach a third phosphate group
Answer:
D
Explanation:
The option that describes the conversion of ADP to ATP is D) an input of energy to attach a third phosphate group.
What is ADP?ADP (adenosine diphosphate) is a molecule that is made up of adenosine and two phosphate groups. ATP (adenosine triphosphate) is a molecule that is made up of adenosine and three phosphate groups. The conversion of ADP to ATP is an energy-intensive process that requires an input of energy.
The third phosphate group is attached to ADP by a process called phosphorylation. Phosphorylation is an energy-requiring reaction that uses ATP as a source of energy.
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In a population of white (W) and black (w) sheep, 22 out of 244 sheep are black. What is the frequency of the dominant allele in the population?
Answer and Explanation:
To calculate the allele frequency in the population, we divide the number of occurrences of the particular allele by total number of all alleles in the population Allele frequencies can be represented as a decimal, a percentage, or a fraction.
Given the population of white (W) and black (w) sheep, 22 out of 244 sheep are black, the frequency of the dominant allele in the population = 222/244×100=
How are adaptations passed to offspring?
Group of answer choices
Adaptations skip generations in organisms. Even if one organism "learns" an adaptation, it will be their "grandchild" organism that gets it.
Adaptations are mostly random, as they are genetic. They are written in the DNA. Changes in genes are random. If a mutation happens and the offspring of two parents has a mutation, sometimes that mutation will help it live.
The parents develop during their lifetime, so their DNA changes, and when they mate, the adaptation and then pass it on to offspring
Parents purposely CHOOSE which adaptations they give to their offspring, because they can choose which half of their genes are going to go into that organism, and predict how it will mix with it's mates genes. it is planned out to ensure species survival. This is especially true in flowering plants.
In evolutionary theory, adaptation is the biological mechanism by which organisms adjust to new environments or to changes in their current environment. The idea of natural selection is that traits that can be passed down allow organisms to adapt to the environment better than other organisms of the same species.
Therefore, the answer is :
Adaptations are mostly random, as they are genetic. They are written in the DNA. Changes in genes are random. If a mutation happens and the offspring of two parents has a mutation, sometimes that mutation will help it live.
1. Look at the five structures shown here. How do you think they are related to each other?
Answer:
They are all related to cells
Explanation:
;^; can you list the answers
DNA is a structure made up of two coiled polynucleotide chains with nitrogenous bases present in chromosomes. These chromosomes are present in the nucleus of the cell. These cells together form an organism.
What are Cells?Cell is define as the smallest unit which can live on its own and that makes up all living organisms and the tissues of the body. A cell has three main parts:
1. The cell membrane
2.The nucleus
3. The cytoplasm.
A nucleus is defined as the membrane-enclosed organelle within a cell that contains chromosomes. It is an array of pores, or pores, in the nuclear membrane that allow the selective passage of certain molecules, such as proteins and nucleic acids, into and out of the nucleus.
Chromosomes are define as the threadlike structures made of protein and a single molecule of DNA which serve to carry the genomic information from cell to cell. These DNA (Deoxyribonucleic acid) is a polymer which is composed of two polynucleotide chains that coil around each other to form a double helix consisting of nitrogenous bases.
Thus, DNA is a structure made up of two coiled polynucleotide chains with nitrogenous bases present in chromosomes. These chromosomes are present in the nucleus of the cell. These cells together form an organism.
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what is site of gaseous exchange in an insect
Answer:
what are the answers? if I knew the answers I could tell ya
DNA relays information in the _______ of its nitrogenous bases.
1.Length
2.Size
3.Order
4.Composition
Answer:
3
Explanation:
DNA RELAYS INFORMATION IN THE ORDER OF ITS NITROGEN BASES
In the body, red blood cells have a much shorter lifetime than cheek cells.
Use ideas about the different structure of these cells to suggest why.
why do you think using a person's own cell to make a new organ or tissue for them will increase the chance that their body will accept the transplant?
Answer:
In my personal opinion, I think this is possible because your body already knows the cell. It is already familiar with it.
Explanation:
Give advantages and disadvantages of asexual reproduction.
Answer:
Advantages and Disadvantages Of Asexual Reproduction
Advantages Of Asexual Reproduction Disadvantages Of Asexual Reproduction
The process requires less energy. Since the offspring is an exact copy of the parent, any negative mutation will also pass on to the offspring