The correct answer to this open question is the following.
Although there are no options attached we can say the following.
The correct answer is the Cambrian period.
By the end of the Cambrian period, all major animal lineages were present in the seas due to the great adaptive radiation of animals.
We are talking about 500 to 540 million years ago on planet Earth.
Scientists consider that during the Cambrian period, major groups of animals diversified. Marine animals such as trilobites were among the first fossils discovered by scientists. Oxford curator Edward Luhyd started to study these fossils in 1668.
How does Klinefelter syndrome caused by nondisjunction might have occurred??
Answer:
Cause. Klinefelter syndrome usually occurs as a random event during the formation of reproductive cells (eggs and sperm). An error in cell division called nondisjunction results in a reproductive cell with an abnormal number of chromosomes.
Explanation:
Help please I will give you the brainliest I need help with 3
Answer: c) A High-Pressure System
Explanation: A high pressure system is a whirling mass of cool, dry air that generally brings fair weather and light winds.
which type of objective lens are there in compound microscope. in one line
One open container and three insulated, closed containers are filled with 1000 mL of ice cream. Each container is placed in the same location for one hour and the ice cream is checked for melting. The data are recorded in the graph.
According to the graph, which container is most effective in keeping the ice cream from melting?
Question 3 options:
the open container
the rubber-lined container
the aluminum-lined container
the fiberglass-lined container
Answer:
the aluminum-lined container
Explanation:
Answer:
fiber lined,,
Explanation:
When an amoeba eats, it does so by the process of endocytosis. What type of transport is this
Answer: Active transport.
I’ll mark you as brainliest
hypotonic solution is the answer
Please help me with science!
The physical appearance or the way a gene looks is known as its.... A. Gene B.Allele C.Phenotype D.genotype
Maya Is a carrier for albinism, a recessive tralt that results in the absence of the skin plgment melanin In halr and
eyes. She marries Jack, and they have four children: Zach, Olivia, Sophla, and Veronica. Veronica expresses the
tralt for albinism, but her three siblings are unaffected by the recessive tralt.
Draw a pedigree that Illustrates the famlly's tralts, and upload your pedigree.
Answer:
The correct answer is as follows:
Explanation:
In this given question, Maya is a carrier for albinism which express in presence of two copies of a recessive gene and after marriage with Jack she has 4 children among three are normal and one has albinism which suggests that the ratio of the albinism in this family is 3:1 phenotypically.
Maya - Aa (heterozygous carrier)
Jack - AA or Aa
cross between two
A a
A AA Aa
a Aa aa
this cross showing that the jack is heterozygous for the condition as the result are the same as given in question 3:1
The diagram below shows a type of virus called a bacteriophage. Select the name of the structure that the virus can use inside a host cell to produce new virus particles.
Answer:
It's the DNA..........
The structure that the virus can use inside a host cell to produce new virus particles is the DNA.
Bacteriophage which literally means bacteria eater is a type of virus that has the ability to infect bacteria.
Basically all bacteriophages consist of nucleic acid molecule (DNA) which is surrounded by a protein coat( the capsid head).
It also possess a tail sheath through which it transfers it's DNA into host cell.
Eventually, new bacteriophages assemble and burst out of the bacterium in a process called lysis.
Therefore, the structure that the virus can use inside a host cell to produce new virus particles is the DNA.
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why the replication in the lagging strand, happened discontinuously?
A student made a model of an ecosystem inside a sealed plastic bottle. She
placed soil, rocks, water, plants, and animals inside the bottle. How is the
model unlike a natural ecosystem?
A. The model has more consumers than a natural ecosystem.
B. The model lacks the producers found in a natural ecosystem.
C. The model has more predators than a natural ecosystem.
D. The model lacks the diversity found in a natural ecosystem.
The model lacks the diversity found in a natural ecosystem.
What is a natural ecosystem?A natural ecosystem is made up of living and non living parts. Energy is cycled in the system along the food chain from one organism to another.
Thus the model that is made by the student is unlike a natural ecosystem in the sense that the model lacks the diversity found in a natural ecosystem.
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Answer:
D. The model lacks the diversity found in a natural ecosystem.
Explanation:
any good hypothesis idea?
Answer:
is plant growth affected by temperature
Explanation:
Why can’t we send cactuses to Mars a plant that doesn’t need much water in a dessert environment
Answer:
Sunlight levels
Explanation:
the cacti would not get enough sunlight, as it is not close enough. Also, it does need water every month or so.
Answer:
because there's no oxygen
What are the properties of clay, and what are the properties & structure of loam soils.
you don’t need to answer all of them, just at least the properties, thanks.
Answer:These properties include: cation exchange capabilities, plastic behaviour when wet, catalytic abilities, swelling behaviour, and low permeability. (clay)
f sand (particle size > 63 micrometres (0.0025 in)), silt (particle size > 2 micrometres (7.9×10−5 in)), and a smaller amount of clay (particle size < 2 micrometres (7.9×10−5 in)). By weight, its mineral composition is about 40–40–20% concentration of sand–silt–clay, respectively. (Soil)
Explanation:
1. What are the phenotypes (descriptions) of rabbits that have the following genotypes?
Ggbb
ggbb
ggbb
GgBb
Answer:
For Ggbb - grey hair with red eyes
For ggbb white hair with red eyes
For ggbb white hair with red eyes
For GgBb grey hair with black eyes
Explanation:
The1AndOnlyMarkus
Homer Simpson goes to his job every day at the Springfield nuclear
power plant. His job as a safety inspector helps keep people and the
environment safe from the possible hazards of nuclear power. Most of the
hazards from his job involve monitoring which of the following?*
A.Uranium-235 and waste containment
B.Water levels and temperature in local lakes
C. Carbon dioxide and other greenhouse gas emissions
Answer: I've never watched Simpsons, but I saw half an episode once on tv where he totally blew up the entire company or something. But I think they said his job was as a technical guy, but he kept falling asleep, and didn't know how to do anything, and that's why he couldn't stop the explosion, or something.
I hope this helps. I'm thinking it doesn't, though.
A tissue is a group of cells which perform essentially the same function. true or false
Answer:
True
Explanation:
A tissue is a group of cells that does the same function.
how are fish adapted in water? write in points
Explanation:
. there gills help them to breath oxygen in water.
. there fins help them to move in water
What microscopic structures make up organisms such as humans (you)?
Answer:
cells are the smallest structural units of living matter and compose all living things.
What phase of mitosis is shown in the picture above?
A. Metaphase
B. Anaphase
C. Telephase
D. Prophase
The phase of mitosis which is shown in the picture is Metaphase. Thus, the correct option is A.
What is Mitosis?Mitosis may be defined as the type of cell division in which two daughter cells are formed from a parental cell with the exact number of chromosomes.
In metaphase, the chromosome usually lines up in one plane and forms an equatorial plate in which they are attached to the spindle fiber through their centromere.
Therefore, the phase of mitosis which is shown in the picture is Metaphase. Thus, the correct option is A.
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Why are individuals in many developing countries susceptible to diseases such as
polio and pertussis?
because of a lack of education
because of poor hygiene
because of genetic variation
because of a lack of vaccination
Answer:
because of lack of vaccination
Explanation:
this occur mostly in Nigeria
Answer:
I hope this helps.
Explanation:
What is the Lytic Cycle?
A) The virus enters the host, makes copies of itself, and then destroys the cell virus doesn’t immediately destroy the cell but instead remains inactive for a prolonged period of time
B) The virus enters the host, makes copies of itself, and then destroys the cell.
Which statement is not an example of how the use of resources has changed?
A. More products are made from recycled materials.
B. Cars still largely rely on oil.
C. Car companies have developed hybrid cars.
D. More wind farms are present in the United States.
Answer:
B. Cars still largely rely on oil.
Explanation:
Nowadays, most countries still use transportation systems that burn fossil fuels. An example of this may be private cars that consume gasoline, which derives from fossil fuels (oil). The use of fossil fuel transportation systems increases the emission of carbon dioxide (CO2), a major greenhouse gas involved in global warming. In the near future, it is expected that fossil fuel-based vehicles can be replaced by electric cars that use energy obtained from renewable sources (e.g., solar energy, wind energy, etc).
Answer:
B is not correct. I know cause I took the test here are the correct answers!
Car companies have developed hybrid cars.
More wind farms are present in the United States.
More products are made from recycled materials.
Explanation:
I just want you to get it right and get an A
Which of these is NOT a reason to take photographs of a crime scene?
A to document the relative locations and positions of evidence
B some evidence can not be collected
C some evidence does not last / is temporary
D once evidence is used in court it is thrown away, and photographs allow CSI to study evidence years later
the answer would be d hope thos helps
The one that is not a reason to take photographs of a crime scene is once evidence is used in court it is thrown away, and photographs allow CSI to study evidence years later. The correct option is d.
What is an evidence?They photograph and physically measure the scene, identify and collect forensic evidence, and keep the evidence in the proper chain of custody.
Fingerprints, footprints, blood and other bodily fluids, hairs, fibers, and fire debris are all gathered by crime scene investigators all are included.
While the most obvious goal of crime scene photography is to create a visual record of the crime scene and all of its relevant features, the best example of photography's role is the presentation of a logical story.
The one reason not to photograph a crime scene is that the evidence is used in court, it is discarded, and photographs allow CSI to study evidence years later.
Thus, the correct option is d.
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how do mutations lead to genetic diversity?
The mutation Mutations are changes to an organism's DNA and are an important driver of diversity in populations. This mutation has introduce a new allele into the population that increases genetic variation and may be passed on to the next generation.
hope it helps.
Essay
In a food web, energy is transferred from one level to the next. Describe what might happen in an ecosystem if the number of primary producers was dramatically reduced.
Answer:
from food web their are many eaters and subeaters so we can easily say energy will decrease when th e first one eat the other
Answer:
the primary consumers or herbivores which feed on the producers would die.
Explanation:
herbivores eat plants and if the plants reduce they will die
can someone help with this please
Answer:
25%Explanation:
If she gets the X chromosome with the hemophilia gene, she will have hemophilia.
A man who has hemophilia and a woman who is a carrier has:
- a 25% (one in four) chance of having a son with hemophilia
- a 25% chance of having a son with normal blood clotting
- a 25% chance of having a daughter who is a carrier
- a 25% chance of having a daughter who has hemophilia
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GL.
Leme know if im wrong.
What type of what type of weathering is when humans use excavating
machines to break up rocks?
Answer:
Mechanical weathering
Explanation:
1
The part of an ecosystem where plants and animals live.
Answer:
habitat
Explanation:
They live in the habitat of an ecosystem
Answer:
Habitat
Explanation:
A Habitat supports both plants and animals.