Answer:
Fossils are defined as the remains or traces of organisms that died more than 10,000 years ago, therefore, by definition the minimum time it takes to make a fossil is 10,000 years. But, that is just an arbitrary line in the sand – it means very little in terms of the fossilisation process.
Explanation:
Fossils are a record of organisms that lived in the past. are two main categories of fossils: body fossils and ichnofossils. Body fossils are the result of preservation of parts or the entire body of a plant, animal, or microorganism. These are the fossils that people are most familiar with, consisting of skeletons, teeth, shells, carapaces, organisms in amber, petrified wood, plant material, pollen, etc. Ichnofossils (also called trace fossils) are evidence of an organism’s activity. Common ichnofossils are animal footprints and trackways, burrows, traces of plant roots, coprolites (fossil feces), and borings in rocks, bones, wood, shells, or other substrates. The study of fossils provides information about ancient biological communities, and the physiology, behavior, and ecology of organisms.
In conclusion, fossilization at least at the present time, is thought to be a very unlikely process and it is believed that only a very small fraction of organisms that lived in the past became fossils. The majority of these fossils were hard skeletal parts or wood. To become fossilized, organisms must be rapidly buried, preferably in a fine sediment with geochemical conditions that favor the exchange of minerals between the sediment and organic components of the organism, and that exchange of minerals is possible because of dissolved minerals in flowing water. If those conditions occur, fossilization must necessarily be a rapid process of a few hours to a few months if it is to occur before decay destroys any record of the organism. Fossilization does not take thousands or millions of years, but is most likely to occur in catastrophic conditions such as would have existed during the Genesis Flood.
For an assignment, Alexis has to write a scientific question. She writes, " How much fat in food can cause brain cancer ? " How can she best rewrite this question so it is a scientific question?
Answer:
Will eating too much fat in food cause brain cancer?
Explanation:
A good scientific question is one that can have an answer and be tested. Avoid how and why questions.
Answer:
Do foods that contain a high amount of fat cause brain cancer?
Explanation:
Do foods that contain a high amount of fat cause brain cancer?
Why are snails classified as a gastropod mollusks?
Answer: Snails have soft bodies and are protected by shells, which are the characteristics of gastropods mollusks.
What method of forecasting uses the effects of past weather conditions as part of its forecasting method? A. Persistence method B. Analog method C. Climatology method D. Trends method
Answer:
analog forcasting
Explanation:
Answer:B
Explanation:Analog method
Residents of Flint, Michigan started organizing when government officials and agencies ignored their complaints that their drinking water was making them
sick. What's this organizing an example of?
A. An EIS
B. A grassroots movement
C. A legal settlement
D. An NGO-led effort
Answer:
a grassroots movement
Explanation:
These organizing are an example of a grassroots movements.
What are grassroots movements?A grassroots movement is one that uses the people in a given district, region or community as the basis for a political or economic movement.
Grassroots environmentalism is that element of the wider environmental movement that engages in forms of contentious politics to develop knowledges about environmental issues, challenge examples of environmental destruction.
Grassroots groups can develop new solutions for existing problems and make use of both local governments and citizens for this. In both resource-rich and resource-poor contexts, grassroots organizations can develop an alternative neighbourhood-based voice.
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Which of the following is an example of a lipid?
phospholipid.
triglyceride
fats and oils.
all of these
Answer:
phospholipid
Explanation:
Phospholipids, triglycerides, fats, and oils are examples of a lipid. Therefore, option D is correct.
What are lipids?Fatty, waxy, or oily molecules are referred to as lipids. They are soluble in organic solvents but insoluble in polar solvents like water. Steroids, phospholipids, oils, and waxes are examples of lipids. They are usually referred to as fats and oils.
Since lipids may be broken down to provide significant amounts of energy, one of their primary biological purposes is the storage of energy. The structural elements of cell membranes and a number of the body's messengers and signaling molecules are also formed by lipids.
Cell membranes, cholesterol, blood cells, and the brain are just a few places where they can be found in the human body.
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What sort of cells are surrounded by a cell membrane?
Answer: Eukaryotic cells, like prokaryotic cells, are surrounded by a plasma membrane.
Activity
EXplain why a complex food web is better than a simple food chain for the survival of the community.
Answer:
A complex food web is better than the simple food chain because the food web links together the relationships between a producer, consumer, and decomposers. Another reason why a complex food web is better than a simple food chain is that if a particular species is eliminated from a food web, the entire ecosystem has a lower chance of collapsing due to that loss. A food web can more readily react to changes in the environment that impact one or more species.
Hope this helps :)
Answer:
(Answers may vary.)
A complex food web is more important than a simple food chain for the survival of a community. The food web is more important because it is more intricate and adaptive than a food chain. A community houses many species. These species are dependent on each other for energy and food. So, there are multiple relationships of energy transfer involved.
A food chain is linear, which means that each predator has only one source of food. So the predator is vulnerable if the food source is depleted through disease or a change in environmental conditions. Whereas in a food web, each predator has many food sources. A complex food web provides multiple preys to species at a higher trophic level. As a result, a food web illustrates the feeding relationships between many species at different trophic levels in an ecosystem.
Explanation:
Answer for plato
he percentage of recombinant individuals that Morgan noted while examining X-linked traits was thought to indicate... Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a the relative distance between the genes b the presence of more than two alleles at each locus c that genetic material was being exchanged with the Y chromosome d the number of genes that could be found on any given chromosome
Answer:
The correct option is a) the relative distance between the genes.
Explanation:
A short distance between genes is a very little target for crossing-over to occur, which means that only a few of them will happen, compared with the number of events between genes that are more separated between each other.
Two genes that are very close have a few recombination events and are strongly bounded. These genes are linked.
The percentage of recombination frequency (P = Recombinant number / Total of individuals) is useful to determine the genetic distance between two or more genes. This distance results from multiplying that frequency by 100 and expressing it in map units (MU) or centiMorgans (cM). One centiMorgan (cM) equals one map unit (MU).
The map unit or centiMorgan is the distance between the pair of genes for which every 100 meiotic products only one results in a recombinant product.
what are breast draw a diagram
which of the following is not a characteristic of eukaryotic cell
Answer:
could i see some options please?
what fruit or seed adaptations might plants have for seed dispersal using biotic vectors such as bird or small mammals?
Answer:
Wind dispersal, Water dispersal, Animal dispersal
A mutation that occurs in the gametes of an organism will most likely be transferred to which of the following?
the other organisms living nearby
the other organisms living nearby
the siblings of the organism
the siblings of the organism
the mating partner of the organism
the mating partner of the organism
the offspring of the organism
Answer:
The offspring of an Organism :)
Explanation:
A mutation that occurs in the gametes of an organism will most likely be transferred to the offspring of the organism. Thus, the correct option is D.
What is Mutation?A mutation is a change which occurs in the DNA sequence, either due to mistakes when the DNA is being copied on to the daughter cells or as the result of environmental factors such as UV light and cigarette smoke.
There are different types of Mutations which include Chromosomal aberrations, Point Mutations, and Frameshift Mutations. These can change the proteins which are synthesized from the DNA.
Therefore, the correct option is D.
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Human embryos must possess what to be viable
Answer: At least one X chromosome.
Answer:
At least one X chromosome
What does the ATP molecule transfer to the sodium potassium pump?
Answer:
Using the energy from ATP, the sodium-potassium moves three sodium ions out of the cell and brings two potassium ions into the cell.
The pump binds ATP and three sodium ions to the cytoplasm where ATP then phosphorylates the pump and it changes shape, opening an opening to the outside of the cell and sodium is released and two potassium ions are taken up .
What is Sodium potassium pump?A sodium-potassium pump is defined as an enzyme found in the membrane of all animal cells where it performs many functions in cell physiology. The Na⁺/K⁺-ATPase enzyme is activated. For every ATP molecule used by the pump, three sodium ions are exported and two potassium ions are imported.
In this Na+ K+ pump which is an electrogenic transmembrane ATPase which was first discovered in 1957 and is located in the outer plasma membrane of cells; on the cytosolic side. The Na+ K+ ATPase pumps 3 Na+ out of the cell and 2 K+ into the cell for every ATP consumed.
Thus, the pump binds ATP and three sodium ions to the cytoplasm where ATP then phosphorylates the pump and it changes shape, opening an opening to the outside of the cell and sodium is released and two potassium ions are taken up.
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Water boils at 100 degrees Celsius and freezes at 0 degrees Celsius.
There are 180 degrees Fahrenheit between 0°C - 100° Knowing this,
how many degrees Fahrenheit are in 1 degree Celsius? Remember
units!
Answer:
Explanation:
There are 100 division in degree celsius between 0°C - 100°
There are 180 division in degree Fahrenheit between 0°C - 100°C
There are 100 division in degree celsius equal to 180 divisions of Fahrenheit
1 division of celsius = 180 / 100 = 1.8 divisions of Fahrenheit .
1 degree of celsius = 1.8 degree of fahrenheit .
The Formation of the Universe: Tutorial
26 of 51 E Save & E
? Question
Drag the tiles to the boxes to form correct pairs.
As you've learned, different objects in space emit different wavelengths of electromagnetic radiation. Use the chart to match
each of the following wavelengths to the correct region of the electromagnetic spectrum.
10-
10
10.
1013
Increasing Frequency (v)
109
10
109 10 10" (Hz)
10"
1014
1012
1010
10
Y rays
X rays
UV
IR
Long radio waves
Microwave FM JAM
Radio waves
10 10
1
10
TO
10-12
10
110
10
10
100
10
10'
10
109
2 (m)
Increasing Wavelength 0) ►
Visible spectrum
100
700
500
600
Increasing Wavelength() in nm
Answer:
amazing snatch but angry? no!
Explanation:
busy and ni answers
Answer:
INFRARED= 7.7X10-5M
RADIO=16.3M
X-RAYS=4.66X10-9M
VISIBLE LIGHT= 5.33X10-7M
MICROWAVES=3.4X10-3M
Explanation:
Your friend is taking a Genetics lab at UT. She needs some help with a lab report so she calls you for some advice—she knows you will be able to help since you are taking Genetics. After analyzing data from a three point cross she has lost her lab manual. The only thing she can find is that the Interference in this cross was 0.68. She remembers a testcross was done with a heterozygous female and that the genes being analyzed were forked bristles, crossveinless wings, and white eyes. She also tells you that there is an equal distance between these genes. What is this distance if she counted 3 double crossover progeny out of 500 total progeny?
Answer:
The distance between these genes is 0.9375 MU
Explanation:
To calculate the coefficient of coincidence, CC, we must use the next formula:
CC= observed double recombinant frequency/expected double recombinant frequency
Note:
observed double recombinant frequency=total number of observed double recombinant individuals/total number of individuals expected double recombinant frequency: recombination frequency in region I x recombination frequency in region II.The coefficient of interference, I, is complementary with CC.
I = 1 - CC
Available data:
• Interference = 0.68
• Equal distance between genes
• 3 double crossover progeny
• Total number of individuals in the progeny, N = 500
We know that
CC= observed double recombinant frequency/expected double recombinant frequency
CC = (total number of observed double recombinant individuals/total number of individuals)/( recombination frequency in region I x recombination frequency in region II)
I = 1 - CC
So, all we need to do is to clear each formula with the data given in the problem:
I = 1 - CC
0.68 = 1 - CC
CC = 1 - 0.68
CC = 0.32
CC = observed double recombinant frequency/expected double recombinant frequency
We already know the value of CC, and we know how to calculate the observed double recombinant frequency. But we need to calculate the expected double recombinant frequency. So,
0.32 = (3/500)/(RF-RI x RF-RII)
0.32 = 0.006 / (RF-RI x RF-RII)
(RF-RI x RF-RII) = 0.006/0.32 = 0.01875
We know that the expected double recombinant frequency is the recombination frequency in region I multiplied by recombination frequency in region II. In this case, it equals 0.01875
We also know that there are equal distances between genes, so now we need to divide 0.01875 by 2
0.01875 /2 = 0.009375
The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU) or centiMorgans (cM). Now we must multiply each recombination frequency by 100 to get the genetic distance
0.009375 x 100 = 0.9375 MU or cM
why cell size remain small even though organism size is large
Answer:
Cell size is limited by a cell's surface area to volume ratio. A smaller cell is more effective and transporting materials, including waste products, than a larger cell. Cells come in many different shapes. A cell's function is determined, in part, by its shape.
What is true about an atom
Answer:
what are the options? are they're any lol
Answer:
atoms have at least one protron and one electron
If we consider the challenges posed by the Great Plate Count Anomaly, what is the primary advantage of using culture independent techniques in microbiology?
Culture independent techniques is simply the use of methods in microbiology that are not based on or relies on cultivation inorder to study a microorganism in a defined ecosystem.
Independent based techniques offer a variety of advantages over the culture dependent methods.
The primary advantage of using culture independent techniques in microbiology is that culture independent techniques has the ability to identify or point out a large proportion of the microbial diversity readily and that identification on a normal state will be difficult to be observed using culture based studies or culture independent techniques.
The explanation regarding the primary advantage of using culture independent techniques in microbiology is described below;
The following information should be considered:
Culture independent techniques has the capability to identify or point out a large proportion of the microbial diversity readil. And that identification on a normal state should be tough to be observed via culture based studies or culture independent techniques.Learn more:
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HELP PLS I NEED HELP NOW WE HAVE 5 minutes left pls help!! ;(
Kinsey eats an apple and then goes back to soccer practice. She runs down the field to kick a goal. She is changing______energy into
________energy.
-mechanical, kinetic
-chemical, mechanical
-chemical electric
-clectic heat
Answer:
B. Chemical--->Mechanical
Explanation:
because the apple is made of chemical substances but the energy is transformed into a mechanical use. Pls Brainliest! It would mean a lot! ;)
Answer:
B
Explanation:
How is the impact of a severe storm on a healthy marsh similar to
the impact of a forest
fire on a healthy forest?
A. After a period of destruction and die-off, the marsh and forest can grow back even
healthier than before.
B. Plants and animals often become extinct as a result of storms and fires.
C. The marsh and forest are both destroyed and have no chance of recovering.
D. There are no similarities.
Answer:
A
Explanation:
In science, which of the following best describes the scientific term
theory? *
A) An educated guess
B) An idea with lots of evidence to support it
C) possible idea that needs more evidence to be real science
D) An undisputed law that will not change.
PLEASE ANSWER!!!!!!!
Answer:
here's your answer
Explanation:
b) an idea with lots of evidence to support it .
In science, the word theory refers to a comprehensive explanation of an important feature of nature that is supported by many facts gathered over time. Theories also allow scientists to make predictions about as yet unobserved phenomena.
Can you think of any structures in the human body that may have once had a job but are no longer necessary?
Answer:
I bealive Vestigial organs or appendix no longer have pourpose.
Explanation:
If I had two rocks and I wanted to see which one was bigger how would I measure it? (think before you answer)
Question 1 options:
A. length
B. temperature
C.volume
D. mass
Answer:
C.
Explanation:
Volume makes up the entire object, so the object (rock) with the most volume would be bigger.
I am found in the mouth of the river when sediment is dropped by the river . What am I?
Answer:
I'm thinking that it's a delta.
Explanation:
Deltas are formed when sediment that has been deposited at the mouths of rivers. Although, I might be wrong idk.
HOW MANY TOTAL CALUIM ATOMS ARE IN 3CaCI2 I WILL MARK BRAINEIST
Answer:
There are three atoms in CaCl2 (calcium chloride) - one calcium atom and two chlorine atoms. It might be argued that there are ions inside the molecule instead of atoms. In that case there is one calcium ion and two chlorine ions.
There are 3 calcium atoms
Which three of these development were major effector european colonization in africa
Answer:
More advanced medicine
Answer:
improvement in transportation and education systems. disregard for existing political or ethnic boundaries. promotion of free trade across countries.
Explanation:
The breading of red and white snapdragons to make pink illustrates what genetic concepts
Answer:
Blending is the mixing of two colors, but in this example red and white colors are appearing independently at cellular level. Thus, no blending occurs. Also, red and white color reappears in F { 2 }-generation.
This phenomenon is known as incomplete dominance.
what does carbon footprint mean???
Answer:
A carbon footprint is the total greenhouse gas emissions caused by an individual, event, organization, service, or product, expressed as carbon dioxide equivalent.
Explanation:
Answer:
The amount of carbon dioxide a person produces
Explanation:
