Answer:
D
Explanation:
I'm not 100% sure this is right but it's a better answer than B
approximately_____ element's occur naturally on earth
Answer:
approximately chemical elements naturally occur on earth
Answer:
About 92 I believe
Explanation:
Which statements accurately describe the characteristics of the cell membrane?
Answer:
If this is the question on edge2020 the correct answers are:
-The cell membrane’s protein channels only let certain molecules pass through.
-The cell membrane has protein channels that are partly inside and partly outside the cell.
- The cell membrane is a double layer of phosphate molecules and lipids.
Explanation:
I HOPE THIS HELPS!!
An organism that breaks down hydrogen sulfide as a source of energy and gets its
carbon from carbon dioxide would be classified as a:
a. Chemoautotroph
b. Photoheteroptroph
c. Chemoheterotroph
d. Photoautotroph
Photoheterotrophs. A heterotroph is an organism that depends on organic matter already produced by other organisms for its nourishment. Photoheterotrophs obtain their energy from sunlight and carbon from organic material and not carbon dioxide.
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how many atoms for each element are im the formula 5Na(C3O4)2
Answer:
6 atoms
Explanation:
Answer:
there are a total of 3 carbon atoms 6 oxygen atoms 5 Na atoms
in total there is 14 atoms
Explanation:
hope i helped if im wrong please feel free to let me know
When can exponential growth occur in a population? Please help
Sciences use the science called blank to classify organisms based on how they are blank
Answer:
Taxonomy (which literally means “arrangement law”) is the science of classifying organisms to construct internationally shared classification systems with each organism placed into more and more inclusive groupings
Explanation:
Hope it Helps :P
EXPLAIN How have advancements in computer technology most directly influenced our
knowledge of wildlife and the ecosystems in which they live?
Advancements in computer technology most directly influenced knowledge of wildlife and ecosystems by spreading information about them, about their role in ecosystems, their importance, etc.
What is ecosystem and wild life?
Ecosystems consist of both living organism and non-living substances. Examples of ecosystems are the grassland ecosystem, the ocean ecosystem, the desert ecosystem, etc. In a grassland ecosystem, all organisms, such as plants, animals, and bacteria, work together in coordination. Different ecosystems have different wild lives . Example: In a forest ecosystem, there are tigers, elephants, lions, donkeys, etc.
They are affected by different human-made activities as well as by natural calamities such as earthquakes. The concerns about the changing ecosystem and its impact on wild life, such as the impact of climate change on them and global warming, are highlighted due to the advancements in computer technology. Activists and the general public spread awareness about them.
Hence, in this way, the advancements in computer technology help spread awareness among people about wildlife and the ecosystems .
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Where in a cell would you most likely find DNA?
Your answer is → compartment within the cell called a nucleus
In a cell, DNA would most likely be found inside the nucleus which is known as the controlling center of the cell.
What is DNA?DNA stands for Deoxyribonucleic acid. It is considered the most common genetic material of living organisms. The genetic information of a particular organism is encoded with these segments, known as DNA.
The process of transcription is initiated within the nucleus of the cell which transforms DNA into mRNA. It is known as the brain of the cell. Due to compartmentalization in eukaryotic organisms, a well-defined nucleus has appeared which helps in the transfer of genetic information from one generation to the next.
Therefore, the nucleus is the region where DNA is most likely found within the cell.
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help asap!! :(
the organ in many nonflowering plants which produces an egg cell is the___
strobila or cone produce egg cell in non flowering plants
The organ in many nonflowering plants which produces an egg cell is the strobila or cone produce.
What is nonflowering plants?Nonflowering plants don't produce flowers; instead, they produce microscopic reproductive elements called seeds or spores that may be used to create additional plants that look just like them.
What is strobila?A shorter stem with several altered leaves bearing sporangia makes up strobili. Gymnosperms, like all seed plants, are heterosporous. Usually, different cones are used to carry the sporangia that produce the male microspores as well as female megaspores.
Nonflowering plants like ferns, mosses, etc other nonflowering plants have reproductive organs called antheridium and archegonium. The male gametophyte's primary source of sperm cells would be the antheridium (male gametes). Numerous sperm will be produced by the antheridium for fertilization.
Therefore, The organ in many nonflowering plants which produces an egg cell is the strobila or cone produce.
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¿Qué puede suceder si un contaminante como herbicidas, desechos animales, desechos de fabricación y pesticidas ingresa al agua subterránea?
Answer:
La contaminación del agua subterránea puede resultar en una mala calidad del agua potable, pérdida de suministro de agua, sistemas de aguas superficiales degradados, altos costos de limpieza, altos costos de suministros alternativos de agua y / o posibles problemas de salud. Las consecuencias de las aguas subterráneas contaminadas o de las aguas superficiales degradadas suelen ser graves
Which two atoms form a covalent bond?
How many pairs of cranial nerves do humans have?
(a) 12 (b) 31 (c) 21 (d) 16
Answer:
A
Explanation:
correct me if I'm wrong thanks
NAME 3 SIMILARTIES AND 3 DIFFERENCES BETWEEN EACH OF THESE ZONES (AT LEAST 1 ABOTIC AND 1 BIOTIC FACTOR FOR EACH)
Sublittoral Zone & Epipelagic Zone
Abyssopelagic Zone & Hadalpelagic Zone
Neritic Zone & Oceanic Zone
Bathyal Zone & Bathypelagic Zone
Euphotic Zone & Aphotic Zone
Answer:
Like terrestrial biomes, aquatic biomes are influenced by a series of abiotic factors. The aquatic medium—water— has different physical and chemical properties than air. Even if the water in a pond or other body of water is perfectly clear (there are no suspended particles), water still absorbs light. As one descends into a deep body of water, there will eventually be a depth which the sunlight cannot reach. While there are some abiotic and biotic factors in a terrestrial ecosystem that might obscure light (like fog, dust, or insect swarms), usually these are not permanent features of the environment. The importance of light in aquatic biomes is central to the communities of organisms found in both freshwater and marine ecosystems.
Explanation:
The ocean is categorized by several areas or zones (Figure 1). All of the ocean’s open water is referred to as the pelagic zone. The benthic zone extends along the ocean bottom from the shoreline to the deepest parts of the ocean floor. Within the pelagic realm is the photic zone, which is the portion of the ocean that light can penetrate (approximately 200 m or 650 ft). At depths greater than 200 m, light cannot penetrate; thus, this is referred to as the aphotic zone. The majority of the ocean is aphotic and lacks sufficient light for photosynthesis. The deepest part of the ocean, the Challenger Deep (in the Mariana Trench, located in the western Pacific Ocean), is about 11,000 m (about 6.8 mi) deep. To give some perspective on the depth of this trench, the ocean is, on average, 4267 m. These zones are relevant to freshwater lakes as well.
The ocean is the largest marine biome. It is a continuous body of salt water that is relatively uniform in chemical composition; it is a weak solution of mineral salts and decayed biological matter. Within the ocean, coral reefs are a second kind of marine biome. Estuaries, coastal areas where salt water and fresh water mix, form a third unique marine biome.
The intertidal zone, which is the zone between high and low tide, is the oceanic region that is closest to land (Figure 2). Generally, most people think of this portion of the ocean as a sandy beach. In some cases, the intertidal zone is indeed a sandy beach, but it can also be rocky or muddy. Organisms are exposed to air and sunlight at low tide and are underwater most of the time, especially during high tide. Therefore, living things that thrive in the intertidal zone are adapted to being dry for long periods of time. The shore of the intertidal zone is also repeatedly struck by waves, and the organisms found there are adapted to withstand damage from the pounding action of the waves (Figure 2). The exoskeletons of shoreline crustaceans (such as the shore crab, Carcinus maenas) are tough and protect them from desiccation (drying out) and wave damage. Another consequence of the pounding waves is that few algae and plants establish themselves in the constantly moving rocks, sand, or mud.
give two examples of how plants and animals affect their environment?
Answer:
Hey mate....
Explanation:
This is ur answer...
Talk about how plants and animals affect other things and give some examples e.g. squirrels bury acorns to save for winter annd some of them grow into oak trees, litter gets washes into storm drains into the ocean and affects wildife, spraying for mosquitoes kills honey bees that pollinate the flowers of apple trees etc...
Hope it helps!
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Plz help I need help
Answer:
stores DNA and controls the cell
Recall that matter is neither created nor destroyed; but it can
Answer:
transform or changed
Explanation:
you can change matter from one stay to the next but you cant actually create it or completely destroy it
Which of the following was likely present in Earth's early atmosphere over four billion years ago?
Group of answer choices
Presence of DNA molecules
Very hot temperatures
Low levels of ultraviolet radiation
Abundance of oxygen
Answer:
low levels of ultraviolet radiation ;)
classify the species Cyanobacteria as consumers detetroves etc ?
Answer:
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Answer:
There are four types of consumers: omnivores, carnivores, herbivores and decomposers. Herbivores are living things that only eat plants to get the food and energy they need. Animals like whales, elephants, cows, pigs, rabbits, and horses are herbivores. Carnivores are living things that only eat meat.
A triplet of bases in a template strand of DNA is CAG. What would be the corresponding codon for mRNA?
GTC
GUC
OGTU
GUU
se presenta cuando un dividuo se alimenta de una parte del cuerpo de otro individuo conocido como huésped u hospedero Cuál es el organismo
Answer:
El parasitismo ocurre cuando un individuo, el parásito, se beneficia de otro individuo, el anfitrión, mientras daña al anfitrión en el proceso. Los parásitos se alimentan de tejidos o fluidos del huésped y se pueden encontrar dentro (endoparásitos) o fuera (ectoparásitos) del cuerpo del huésped (Holomuzki et al. 2010).
Plz help I need help
Answer:
cell wall is absent in
human
butterfly
shark
Many desert plants use allelopathy to
minimize competition and to keep other
organisms away. What type of dispersal
pattern does this cause among the
plants?
A. random
B. clumped
C. uniform
D. huddled
Answer:
B
Explanation:
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give two examples of the thermal energy of a substance being decreased
Answer:
Adding ice to a glass of water causes the temperature of the water to decrease because the thermal energy in the water causes the ice to melt. A grill gives off thermal energy by burning propane.
What did
Rudolph Diesel use as fuel?
5. Look at the highlighted portion of the graph. Which of the following is the best explanation for what is occurring within the population during this time period? A. birthrate > death rate B. birthrate < death rate C. birthrate = death rate
Answer:
A. birthrate > death rate
Explanation:
I had this question and this was the right answer
Drag the appropriate labels to their respective targets. Label processes on the right in PURPLE, and all other components on the left.
Starting from the top downward:
Group 1:
TranscriptionRNA processingTranslationGroup 2;
DNAPre-mRNAmRNARibosomePolypeptideThe entire setup represents what happens during gene expression. The process starts in the nucleus with genetic information in DNA being transcribed into mRNA.
The pre-mRNA undergoes some processing before being transported to the cytoplasm where it gets attached to the ribosome and utilized in the synthesis of polypeptides (also known as proteins) in a process known as translation.
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please help
a- protein
b- carbohydrate
c- liquid
d- nuclear acid
Answer:
i think lipids
Explanation:
Suppose 128 radioactive atoms have a half-life of 15 seconds. Approximately how
many radioactive atoms will be left after 30 seconds?
A.64
B.32
C.16
D.8
Answer:
the number of radioactive atoms will be left after 30 seconds is
D. 8 EIGHT
How is biodiversity connected to healthy ecosystems? What is biodiversity?
Answer:
Below! : )
Explanation:
What is biodiversity? Well, in simple terms, biodiversity refers to all the variety of life that can be found on Earth (plants, animals, fungi, and micro-organisms) as well as to the communities that they form and the habitats in which they live. But how is biodiversity connected to healthy ecosystems? Well, many factors can contribute to this question but Biodiversity boosts ecosystem productivity where each species have an important role to play. With this in play we can see that it is healthy and keeps ecosystems safe.
I hope this helps! : )
Statistics: Chi-squared Introduction:
A Chi-square test is used to compare observed data with expected data according to a hypothesis. For instance, if you were crossbreeding 2 heterozygous pea plants, you would expect to see a 3:1 phenotypic ratio in the offspring. In this case, if you were to breed 400 pea plants, you would expect to see 300 plants showing the dominant trait and 100 showing the recessive trait. But what happens if you observe only 260 plants with the dominant trait and 140 plants with the recessive trait? Does this mean something is wrong with Mendelian genetics or is this difference in expected results just due to chance (random sampling error)? These are the questions that can be answered using Chi-square statistics.
The results of this statistical test is used to either reject or accept (fail to reject) the null hypothesis. The null hypothesis states there is no significant difference between the observed results and the expected results. This means that if the null hypothesis is accepted, the difference in observed and expected results was just a matter of chance and so the observed results basically "fit" with what was expected.
Degrees of freedom (df) = number of independent outcomes (Y) being compared less 1
df = Y-1
At the 95% confidence interval we are 95% confident that there is a significant difference between the observed and expected results, therefore rejecting the null hypothesis.
Probability Value - Is the decimal value determined from the X2 table and is the probability of accepting the null hypothesis. A 0.05 probability value equates to a 95% confidence interval.
Problem:
The parent generation is yellowed podded and green podded pea plants. You cross a yellow podded pea plant with a green podded pea plant and you get 100% yellow podded plants in the 1st generation [F1 generation] (Phenotypic ratio 4 yellow : 0 green).
What will be the expected phenotypic ratio when you allow the F1 generation to reproduce? Work a Punnett square.
We observed 1150 yellow and 350 green when actually crossing F1 generation.
Would this be a consistent with what was expected?
Do your work and answer the questions on a separate paper/ document and upload it here.
Why would you run a Chi-squared test?
To determine if our data exactly matches the expected results.
To determine if our data is consistent with expected results.
To determine the expected results.
To compare the phenotypic ratios to the genotypic ratios.
Determine the degrees of Freedom of the phenotypic ratio for this genetic cross.
1
2
3
4
5
Using the data given, what is the result of your Chi-squared analysis? x2= ___.
2.22
2.71
4.36
187.78
448.27
Using the results of your Chi-squared analysis, do we fail to reject or reject the null (i.e. no connection) hypothesis?
Fail to reject the null
Reject the null
It cannot be determined from the data given
If we flipped a coin 100 times. Which of the following is the minimum number necessary to achieve significance?
55
60
63
70
75
We perform a Chi-square analysis to find out if the difference between observed and expected is due to chance or not. In this example, 1) FD=1 / 2) X² = 2.22 / 3) Fail to reject the null / 4) 75.
-------------------------------------------------
Since a complete introduction to Chi-square was provided, we will proceed with the problem analysis.
1st Cross: Yellow x green
Parentals) YY x yy
F1) 100% Yy, yellow
2nd Cross: Yellow x yellow (From F1)
Parentals) Yy x Yy
F2) 3/4 = 75% of the progeny is expected to be yellow
1/4 = 25% of the progeny is expected to be green
We know from the data, that there are 1500 individuals in F2. So we can get the expected number of individuals from this data.
100 % of the progeny ----------------------- 1500 individuals
75 % yellow ------------------------------------X = 1125 individuals
25% green -------------------------------------X = 375 individuals
We assume the population is in H-W equilibrium, but we observe differences in what we expect to see and what we actually see. We want to know why.
H₀ = there is no significant difference between the observed results and the expected results. The difference in observed and expected results is by chance.H₁ = The difference in observed and expected results is not just a matter of chance.Now we will make a table resuming information
Yellow Green
Observed 1150 350
Expected 1125 375
(Obs-Exp)²/Exp 0.555 1.666
X² = Σ(Obs-Exp)²/Exp = 0.555 + 1.666 = 2.221Y = 2 df = Y-1 = 2 - 1 = 1Significance level / probability value = 0.05Table value / Critical value = 3.841P₀.₀₅ > X²3.841 > 2.221We can see that the table value is greater than the X² value, so there is not enough evidence to reject the null hypothesis.
The genotypes might be in equilibrium, and there might be independent assortment.
This results suggest that the difference between the observed individuals and the expected individuals is by random chances.
So now let us answer the questions,
1) Determine the degrees of Freedom of the phenotypic ratio for this genetic cross ⇒ DF = 2 - 1 = 1
2) What is the result of your Chi-squared analysis? ⇒ X² = 2.22
3) Do we fail to reject or reject the null hypothesis? ⇒
We Fail to reject the null hypothesis. There is not enough evidence to reject it.
4) If we flipped a coin 100 times. Which of the following is the minimum number necessary to achieve significance? 75 is the minimum number necessary to achieve significance
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