There were no coal deposits formed during the Precambrian period because there wasn't enough carbon dioxide in Earth's early atmosphere.
What is the Precambrian?The Precambrian is a Super Aeon, corresponding to the time period from the formation of the Earth (~4.6 billion years – b.a.) to the beginning of the Cambrian Period (~542 million years – m.a.).
With this information, we can conclude that there were no coal deposits formed during the Precambrian period because there wasn't enough carbon dioxide in Earth's early atmosphere.
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Explain what biodiversity is and give three reasons why it is important write one additional sentence about what is happening to our planets biodiversity and why this is a concern
Answer:
I am only able to help with part of the question, but here it is:
Biodiversity: the variety of life in the world or in a particular habitat or ecosystem
I hope that this can help to get you started!
2. Summarize the trends you see in each population from each generation. a. Dark bears— b. Light bears—
The black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.
Dark bearsThe black bear (Ursus americanus), also known as the baribal, is a North American bear, found from Alaska to northern Mexico. It reaches 2.20 m in length, 1.10 m in height at the withers and 360 kg in weight.
Light bearsThe polar bear (Ursus maritimus) is a solitary mammal that lives in the icy waters of the Arctic Circle region. It is the largest species of bear that lives in places with low temperatures, being much feared by other animals that inhabit the place.
Considered the largest terrestrial carnivore and main symbol of arctic resistance, the polar bear has been suffering from climate change.
Whit this information, we can conclude that the black bear has a tendency to proliferate, whereas the polar bear has a tendency to undergo faster extinction because they live in the arctic.
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How did green algae come about
Answer:
Green algae grow at the edges of a glacial lake in Wales. Hundreds of millions of years ago, similar algae adapted to survive temporarily outside of the water may have kicked off the evolution of green land plants.
Algae didn't always hang out in the seas, but one fateful day, about a billion years ago, a simple bacterial cell swallowed a cyanobacteria cell, writes Ed Yong at The Atlantic. This chance occurrence allowed the bacteria to produce energy from the sun, a process known as photosynthesis.
Explanation:
Image attached
20 POINTS
Which one is false???
. Which of the following types of erosion is caused by landslides?
a. Gravity erosion
b. Wind erosion
c. Wave erosion
d. Temperature erosion
e. Flood erosion
Answer:
a. Gravity erosionerosion
Explanation:
What are one advantages and disadvantages of RENEWABLE resources?Use these sentence starters to help you:
One advantage of renewable resources is ____________.
One disadvantage of renewable resources is _____________.
Answer:
One advantage of renewable resources is that it won't run out.
One disadvantage of renewable resources is that it has limited storage capabilities
how do pinnate leaves adapt themselves for photosynthesis in their habitat
If a person were having trouble balancing while walking, which cranial nerve should be tested for damage
Answer:
vestibulocochlear nerve
Explanation:
The Vestibulocochlear nerve( V||| cranial nerve) should be tested in a person who is having trouble balancing while walking.
What is Vestibulocochlear nerve?The Vestibulocochlear nerve has two components within a single trunk: the vestibular nerve, which innervates the semicircular canals of the inner ear and is involved with equilibrium, coordination, and orientation in space, and the cochlear nerve, which innervates the cochlea and subserves hearing.
Dysfunction of the vestibular system results invertigo, the sensation of environmental motion. On examination, patients with vestibular nerve dysfunction typically have nystagmus, in which the fast component is directed away from the affected nerve. With their arms outstretched and eyes closed, their limbs tend to drift toward the injured side.
Functions of vestibulocochlear nerve:
The primary function of the vestibulocochlear nerves (VIII) is a special sensory, but of two types.The vestibular nerve handles balance and equilibrium, while the cochlear nerve is responsible for hearing.To learn more about Vestibulocochlear nerve,refer:
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what statement about the cell membrane is true?
After a culture of cells is allowed to multiply and is viewed through a microscope, the cells are x-rayed with high-energy radiation for less than 1/100th of a second. After the radiation, many newly reproduced cells appear different. What has probably occurred?.
After an exposure of the cells to high-energy radiation many newly reproduced cells appear different due to mutation.
What is mutation?Mutation occurs in cells when the change or damage of deoxyribonucleic acid in the cell brings about alterations in the genetic makeup of the organism.
Mutation of genetic material is caused by environmental factors called mutagens.
Examples of mutagens include:
radiation, chemicals, andinfectious agents.X-ray is an example of electromagnetic wave that possess high-energy radiation.
Therefore, after an exposure of the cells to high-energy radiation many newly reproduced cells appear different due to mutation.
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Which of the following is a genotype for an individual heterozygous for a trait?
a. Rr
b. tt
c. YY
d. Pr
Answer:
A. Rr
Explanation:
A. has the same phenotype
D. has different prototypes
What does being in hardy-weinberg equilibrium mean for a population?.
The Hardy-Weinberg equilibrium is a principle stating that the genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.
How long does it take for tadpoles to turn into frogs?.
Answer:
about 14 weeks.
Which of the following is true?
O Rivers account for most of the earth's surface water
O Earth's water = 60% Ocean and 40% Freshwater
O Glaciers and Icecaps account for most of the freshwater on earth
O Most of the earth's freshwater is groundwater like rivers and lake
Answer:
C. Glaciers and Icecaps account for most of the freshwater on earth
Explanation:
Glaciers and icecaps make about 68.7% of the freshwater we have here on earth.
I hope it helps! Have a great day!
Sandra~
Answer:
C.
Explanation:
Glaciers and icecaps make about 68.7% of the freshwater we have here on earth, so that would make the answer C.
I hope it helps! Have a great day!
bren~
Polymers are made up of which of the following?
Atoms
Electricity
Threads
Pigments
Answer:
Your answer is A.) Atoms.
Explanation:
Hope this helps you!
Answer:
Threads
Any fabric you take from earth's surface they are made up threads.Polymers are also one kind of fabric .So they also contain threadsOption C
Explain the difference between rotating and revolving. Then, describe the rotation and revolution/orbit of Earth.
Answer in at least four complete sentences. (o-o¬)
Be sure to check your grammar and spelling.
You can use the sentence starters and hints below to help you answer the questions:
When the Earth rotates, it is ________________________________.
When the Earth completes one revolution, it is __________________________.
*Hints for your last two sentences: Think about the shape of Earth's orbit, how long one rotation and one revolution take, etc.
Answer:
Rotation is the spinning of an object in one place. Revolution is the circling of an object in a given orbit (path).
Explanation:
When the earth rotates, it spins on its own axis which is tilted at 23.5 degrees. Thus, we can conclude that the earth rotates on its axis every 24 hours relative to the Sun.
When the Earth completes one revolution around the sun in a fixed orbit in 365.25 days. This means the earth takes approximately 365 days to completely encircle around the sun and return back to its original position.
(The extra .25 day is added every year to make up one full day. Hence, we see a leap year every 4 years).
Air pressure is lowest in the lungs during which of the following points during inspiration or expiration? (2 points)
A) End of inspiration, when lung volume is lowest
B) End of inspiration, when lung volume is highest
C) End of expiration, when lung volume is lowest
D) End of expiration, when lung volume is highest
Answer:
a) end of inspiration when lung volume is lowest
Explanation:
Energy pyramids show the most available energy at the base and the least amount of energy at the top. What accounts for the difference in the energy levels in these two parts of the energy pyramid?
choices:
A. Some of the energy is destroyed
B. The energy is used by decomposers
C. The energy is continually recycled in the biosphere
D. With each succeeding level, most of the energy is used by the organisms for life processes and some of the energy is "lost" as heat
Answer:
D
Explanation:
the energy from the sun is gradually lost after each level increase because the organism before being eaten uses the energy to stay alive such as staying warm or running from predators
Which sphere is the atmosphere interacting with when winds are produced over oceans?.
Answer:
The hydrosphere
Explanation:
The atmosphere interacts with the hydrosphere to redistribute water over the surface of Earth.
darwin observed that organisms that were best able to survive and reproduce had adaptations that were...
A. suited to their environment.
B. ill suited to their environment.
C. incompatible with their surroundings.
D.nonexistent throughout the species.
Answer:
A: Suited for their environment
Explanation:
You can automatically eliminate B and C, since they both say that animals with adaptations that won't work with their environment would have a higher survival rate. This doesn't make sense; adaptations that wouldn't suit an environment would actually lower the population's chances of reproduction and survival.
That leads us to A and D. However, A would be the correct answer. Organisms with adaptations that suited their environment would help them (since it would make the organism more compatible with their environment), rather than having no change at all.
Hope this helped!
Answer: A. suited to their environment.
Explanation:
The complement cascade and its by-products contribute to:.
The complement cascade and its by-products contribute to
Both triggering inflammation and attracting phagocytes to sites of infection
The small intestine coudn't work without the _________ because fats coudn't be broken down.
Answer:
bile from the gallbladder
Why do anole lizards represent an excellent proxy for studying evolution?.
Anole Lizards represent an excellent proxy for studyimg evolution because : Anole lizards are examples of convergent evolution
What is a Convergent evolution ?A convergent evolution is a type of evolution where different living things acquire the same type of adaptations independently for the same kind of challenges in that occur in similar ecological niches. Anole lizards are examples of convergent evolution.
Hence we can conclude that Anole Lizards represent an excellent proxy for studyimg evolution because Anole lizards are examples of convergent evolution.
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whats produced by the prosses of meiosis
Answer: gametes
Explanation: During meiosis one cell divides twice to form four daughter cells. These four daughter cells only have half the number of chromosomes of the parent cell – they are haploid. Meiosis produces our cells or gametes (eggs in females and sperm in males)
Which organism has the more efficient heart?
A: a frog
B: a robin
C: an alligator
D: a tuna
Answer:
I think its a alligator or a frog I'm not rlly sure but I think it might be a alligator
what is one benefit to giant octopuses laying many eggs?
Answer:
The majority of baby octopuses born don't reach adult hood, laying more eggs increases the number of babies that have a chance to make it to adulthood.
Answer:
During courtship, both octopuses use their sense of sight to determine attraction. Males are looking for a large female. Larger diploid females produce more haploid eggs, by meiosis If more eggs are fertilized, it gives the male a greater probability to pass on his genes.
Explanation:
just allows males to pass on more of their traits
Select the correct answer from each drop-down menu. the dna of humans and mice is almost 92% similar. this similarity indicates that . mice have a tail, while humans have a tailbone. the tailbone is a structure in humans.
The DNA of humans and mice is almost 92% similar. This similarity indicates that mice share a common ancestor with humans. Mice have a tail, while humans have a tailbone.
Why do humans share DNA with mice?Humans and mice don't look alike, but both species are mammals and are biologically very similar. Almost all of the genes in mice share functions with the genes in humans.
That means we develop in the same way from egg and sperm, and have the same kinds of organs.
Thus, Mice have a tail, while humans have a tailbone is correct.
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Question 1 of 17 Pag
Question 1
Different substances have different properties that can be used to identify them. There are three test tubes X, Y, and Z filled with gas.
Can the properties of the gas in each test tube be used to tell whether the gases are the same or different?
What do you think might happen when a gas is exposed to a small flame? List as many possible results as you can think of
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The properties of the gas in each test tube can be used to tell whether the gases are the same or different, because depending on the substance, chemical reactions will occur.
What do you think might happen when a gas is exposed to a small flame?This happens in the flame test, which is based on the fact that when a certain amount of energy is supplied to a certain chemical element (in the case of a flame, energy in the form of heat), some electrons in the last valence shell absorb this energy.
Moving to a higher energy level, producing what we call an excited state. When one of these excited electrons returns to the ground state, it releases the energy previously received in the form of radiation.
With this information, we can conclude that the properties of the gas in each test tube can be used to know if the gases are the same or different, because depending on the substance, chemical reactions will occur.
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up, are then matched with their partner ar
chromosomes). Once all the chromosom
chromosome can be found and the exac
Pre-Lab Questions:
1. What is nondisjunction?
2. What is karyotyping?
3. How many chromosomes does an indi
A box is pushed a distance of 4 meters with a force of 10 N. How much work has been done?
6 units of work
40 units of work
14 units of work
No work has been done
The quantity of work done by the box is equal to 40 units of work.
Given the following data:
Distance = 4 meters.
Force = 10 Newton.
How to calculate work done.In Science, work done is generally calculated by multiplying force and the vertical distance (displacement) that is covered by an object.
Mathematically, work done is given by the formula:
Work done = force × distance
Substituting the given parameters into the formula, we have;
Work done = 10 × 4
Work done = 40 units of work.
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