Answer:
1.) stromatolites
2.) photosynthesis
3.) Ordovician
4.) Cambrian
5.) oxygen
6.) As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.
7.) Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.
Explanation:
From Penn
Answer:
1. stromatolites
2. photosynthesis
3. Ordovician
4. Cambrian
5. oxygen
6. As Earth cooled, carbon dioxide dissolved in the early ocean. Cyanobacteria consumed carbon dioxide and converted it to oxygen. Methane was removed from the atmosphere as oxygen was produced, eventually leading to the Cambrian Explosion.
7. Metabolic processes that use oxygen produce more energy than anaerobic metabolism. Simple diffusion of oxygen would limit the size of a multicellular eukaryote, but animals evolved ways to transport oxygen to their tissues, which permitted an increase in size.
Explanation:
Just did it on Penn Foster
the caw is_the tree
Answer:
what
Explanation:
Traits, or characteristics, that organisms develop and are passed down to become new species are called _______ traits.
what are some injuries where you don't feel pain?
Answer:
Jumping off a high building
Explanation:
your body wont feel the pain bc u will die to fast and ur brain cant proccess the pain btw dont k----ys
what are the merit of
indigenous education
Answer:
It was a way to protect, preserve and develop traditional indigenous skills and cultures. Education was a significant step towards empowering indigenous peoples to participate more fully in their communities. It was an indispensable asset to attain freedom and social justice.
Answer:
The core of indigenous education in Africa focused on providing each individual in the community with knowledge, practical skills and attitudes in order to prepare them to for his/her role in the society. It is a holistic system, in which apprenticeship, story telling, proverbs and myths played an important role. Traditional education developed in the ‘learners’ a sense of obligation towards the community and made learners to appreciate the history, language,customs and values of the tribal group, keeping in touch with their heritage, their cultural roots. Western education alienates young Africans from their cultural heritage.
Which phrase is associated with asexual reproduction but not sexual
reproduction?
Answer: B. Genetically identical offspring
Explanation:
Asexual reproduction that means the parent organism will split into two organisms, and that there will be no mixing of the DNA, as it is the case in case of the sexual reproduction which mixes up the DNA. Therefore the child and the parent organism will contain exactly the same genetic material.
Which wave interaction is shown by the diagram? o absorption o diffraction o reflection o refraction
Answer:I agree
Explanation:
Diffraction wave interaction is shown by the diagram.
What do you mean by diffraction?Diffraction is defined as the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture.
The most common example of diffraction occurs with water waves which bend around a fixed object. Light bends similarly around the edge of an object. The animation shows wave fronts passing through two small openings.
Diffraction results from the interference of an infinite number of waves emitted by a continuous distribution of source points. According to Huygens' principle every point on a wave front of light can be considered to be a secondary source of spherical wavelets.
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Night blindness (n) is a sex-linked recessive trait. A woman who is night blind marries a man who is not night blind. What are the genotypes of both individuals?
Answer:
Genotype of night blind woman - XnXn
Genotype of normal man - XY
Explanation:
Given
Night blindness (n) is a sex-linked recessive trait. Let us say it is X linked recessive
In this case a man with XY genotype having a diseased X allele will be night blind while a woman will have night blindness if both the X allele are diseased . In case if only one X allele is diseased in women then, she will be a carrier of night blindness defect
Genotype of night blind woman - XnXn
Genotype of normal man - XY
Which natural resource is renewable?
A. coal
B. wind
C. topsoil
D. oil
Wind is the natural resource which is renewable. Therefore, option (B) is correct.
Wind energy is considered a renewable resource because it comes from the natural flow of air masses caused by the sun and the Earth's rotation. Wind turbines turn the kinetic energy of the wind into power, and as long as there is wind, this process can keep going forever.
Wind doesn't run out like coal and oil (options A and D), which are both solid fuels. Topsoil (choice C) is an important resource for agriculture, but it can be worn down or eroded over time, making it non-renewable in the short run if it is not managed well.
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A student made a table to show information about the physical structures and organs of birds. What statement best describes how to correct an error in the table?
A. The feathers support the body.
B. The feathers help the bird move.
C. The ovaries produce the eggs.
D. The ovaries produce the sperm.
Answer:
C
Explanation:
i go to flvs too, also, good luck on FSA
A student made a table to show information about the physical structures and organs of birds. The statement which best describes how to correct an error in the table is the ovaries produce the eggs. The correct option is C.
What are the physical structures and organs of birds?Birds are the warm-blooded animals. Their forelimbs are generally modified into wings. They have a well-developed flight muscles which help during the flight of bird. Their hind limbs are adapted for the purpose of walking, hopping, perching, grasping, wading and swimming.
The ovaries produce the eggs. The ovaries are responsible for producing eggs in birds. Therefore, if there is an error in the table that incorrectly identifies the function of the ovaries, it is important to correct it by stating that the ovaries produce the eggs.
Therefore, the correct option is C.
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Does nutrients cycle within and between ecosystems?
The genetic researchers at Bay Medical Company are interested in spiders with the trait for medium silk flexibility. They
think this sik can be used for medical purposes such as for making stitches and for creating artificial tendons. Why do
you think offspring B has the medium silk flexibility trait?
Answer:
Due to similar shape.
Explanation:
I think offspring B has the medium silk flexibility trait because this offspring B is identical to the spider that is responsible for medium silk flexibility trait. There are some offspring identical to male parent spider due to the presence of dominant allele whereas very littles number of offspring is similar in appearance with the female spider due to recessive allele. If the male spider has medium silk flexibility trait so more number of offspring has medium silk flexibility trait as compared to others.
The people at the Medical research bay company are researching on spiders. the trait for the medium silk flexibility. The silk can be used for medical purposes and creating other tendons.
The B offspring has the medium flexibility trait it's identical to the spider that is responsible for the medium silk flexibility trait. There are some offspring identical to male parent spider due to the presence of dominant allele spider due to recessive allele.Learn more about the medical Company are interested in spiders.
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Outline the effect of the following mutations:
TAG-> TAT
TAC-> TCC
Answer:
TAG-> TAT >> sense mutation
TAC-> TCC >> missense mutation
Explanation:
A sense mutation is a type of mutation that changes a stop codon into a sense codon, thus producing an elongated protein. The TAG codon (UAG in the RNA) is a stop codon, while TAT (UAU) encodes for tyrosine, thereby TAG-> TAT is a sense mutation. On the other hand, a missense mutation is a type of point mutation where a single nucleotide change generates a new codon which encodes a different amino acid. In this case, the TAC codon (UAC) encodes for tyrosine, while TCC (UCC) codon encodes for serine, and therefore TAC-> TCC is a missense mutation (Tyr to Ser mutation).
which of these is an example of an abiotic factor
A:creosote plant
B:rocky desert soil
C:kangaroo rat
D:coyote
Answer:
[tex]\boxed {\boxed {\sf B. \ Rocky \ desert \ soil}}[/tex]
Explanation:
An abiotic factor is a part of an ecosytem, but it is not alive. Some examples include water, rocks, sunlight, and the atmosphere.
On the other hand, a biotic factor is a living part of an ecosystem. Some examples are animals, plants, and fungi.
Let's look at the answer choices.
A creosote plant (choice A) kangaroo rat (choice C) and coyote (choice D) are all living organisms. Therefore, they must be biotic factors.
However, rocky desert soil (choice B) is not living. It's a part of the ecosystem, but since it's not alive it must be abiotic.
Which of the following scenarios will decrease the genetic variation of a population?
Answer:
population of birds suddenly decrease their frequency of sexual reproduction.
Explanation:
This is the answer to quiz accordingly.
Hypernatremia is a condition where there is too much salt in the blood. How does the body maintain homeostasis if salt levels are too high?
Select one:
The pancreas increases its generation of insulin.
The liver produces more of the hormone glucagon.
The brain receives a signal to decrease blood volume.
The brain sends a signal to decrease urine output.
thanks for the help!
Answer:
The answer is D.
Explanation:
This makes the most sense as it reduces water loss from the body.
Plz help Well mark brainliest if you are correct!!
Answer:
Rachel Carson (B)
Explanation:
She was an marine biologist.
An ecologist is someone who studies an environment such as the ocean and also studies the things in the environment.
Preparing Informative Presentations
There are a variety of reasons a person presents a speech. Perhaps the most common reason is to present timely or useful information to an audience.
Such speeches are called expository speeches, and they rely on the effective transfer of information to listeners. An expository speech could be a definition speech, which explains an object, person, or event. It could also be a demonstration speech, which explains to the audience how to complete a process or task. A successful informative presentation depends on a few key steps that will help you prepare, inform, engage, and educate.
Based on the tips in the article, come up with a topic of your own that would make an interesting demonstration speech?
Answer:
How fast a 1960 Dodge Challenger can go versus how fast a 2020 Dodge Challenger can go.
GIVING 20 POINTS PLEASE HELP ME ASAP!!!!!
Answer:
The Answer is gonna be D. There are fewer winds in summer to interfere with drying up puddles
Ecosystem productivity is principally limited by
a. sunlight and nutrient availability
b. water and nutrient availability
c. the availability of time and nutrients
d. none of the above
Answer:
a
Explanation:
It rains a lot in the United Kingdom because of
Which label belongs in the area marked Y?
A. Neither allele is dominant.
B. An intermediate phenotype is expressed in offspring
C. One allele is dominant over the other.
D. Both dominant alleles are fully expressed in offspring Y
Answer:
the answer is A
Explanation:
Based on the data, which of the following most accurately matches a potential change with its predicted effects on the southern Florida ecosystem?
A) Introduction of a new top predator species that preys solely on Burmese pythons would cause an increase in
the raccoon population.
B) If the population of Burmese pythons were to decrease, then the cotton rat population would increase.
С) If more Burmese pythons are introduced in the Everglades, then mosquitoes will begin feeding on white-tailed deer frequently again.
D) Introduction of a new snake species that competes with the Burmese python for food would lead to an
increase in the white-tailed deer population.
Answer: A
Explanation:
Introduction of a new top predator species that preys solely on Burmese pythons would cause increase in the raccoon population (i took this test)
Please please answer! I will give you brainiest!
In 1996, the comet Hale Bopp came close to Jupiter and its orbit around the sun changed from 4200 years to 2380 years. For scientists to understand the orbital changes in the comet Hale Bopp, first they must understand -
A) the composition of Jupiter
B) the magnetic attraction of objects
C) gravitational attraction of objects
D) the similarities of planets and comets
Answer:
C
Explanation:
Orbit is just the smaller object that's orbiting the bigger object is trying to move in a straight line but the gravitational force from the bigger object is trying to pull the smaller object to itself. I hope this answers your question!
Tay-Sachs disease is a genetic disorder that is usually fatal in young children. If both parents are carriers of the disease, the probability that their offspring will develop the disease is approximately 0.25. Suppose that a husband and wife are both carriers and that they have four children. (The outcomes of the four pregnancies are independent). What is the probability that two children develop Tay-Sachs disease
Answer:
Tay-Sachs disease (TSD) is a genetic disorder that normally kills children when they are young. If both parents are carriers of the disease, their offspring have a 0.25 chance of contracting it.
Explanation:
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What are the five ways fossils can form
Answer:
Explanation:
1.preservation of original remains
2.permineralization,
3.molds and casts,
4. replacement,
5. compression.
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Describe the flow of a river from beginning to the end
Use the following terms: headwaters, springs, tributaries, confluence, and mouth
The flow of river begins with the Headwater .
Springs are warmer water bodies compared to rivers,
The rivers connect to another river to form a confluence
Rivers flow into larger water bodies in the form of tributaries.
The mouth of the river flows from a larger source to a smaller body of water.
Describing the flow of a riverThe flow of river begins with the Headwater ( the beginning of the river ), springs are warmer water bodies compared to rivers, When the rivers flow they connect to another river ( confluence ) which flow into larger rivers in the form of tributaries while the mouth of the river flows form a larger source to a smaller body of water.
Hence we can conclude that the flow of river is as described above
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Which water reservoir contain salt water
Lakes
Glaciers
Polar ice caps
Oceans
Answer:
D. Oceans
Explanation:
I got it right on an assignment and isnt it obvious?
All animals are ____ eukaryotes and are _____
Answer:
All animals are multicellular, heterotrophic eukaryotes.
Explanation:
Briefly explain the neurophysiological basis (i.e. neuronal/axonal activity, synaptic behaviour) of how the monkey grip procedure
performed about the arms is able to cause a greater stretch reflex response in the leg for the same amount of sensory input when compare to a response without the monkey grip procedure.
The monkey grip procedure involves squeezing an object with one hand while the other arm is passively stretched that causes an increase in the stretch reflex response in the leg muscles of the same side that is being stretched.
What are the neurophysiological basis of the monkey grip procedure?The neurophysiological basis involves the activation of descending pathways from the brain modulating the stretch reflex response. When the grip is initiated, activation of motor areas in the brain increases that send signals down to the spinal cord.
These signals inhibit the interneurons activity that causes stretch reflex response causing a greater response in the leg muscles when they are stretched. The stretch reflex involves the activation of muscle spindles in the spinal chord that inhibit or excite the motor neurons that control the muscle.
The monkey grip procedure increases the excitability of the motor neurons controlling the stretched leg muscles that results in a greater stretch reflex response leading to a more forceful contraction of the leg muscles.
Therefore, the monkey grip procedure involves the complex interactions between descending motor pathways from the brain in the spinal cord that underlie the stretch reflex response.
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