Which of these is the most sustainable city?
A. Johannesburg, South Africa
B. Helsinki, Finland
C. Reykjavik, Iceland
D. Gothenburg, Sweden
Answer:
D
Explanation:
Norway has overtaken its neighbor Sweden to become the world's most sustainable country, RobecoSAM's latest Country Sustainability Ranking reveals.
Help guys I need this ASAP
Answer:
Probably A
Explanation:
During the action of a sodium-potassium pump, 50 ATP molecules were spent. Predict how many sodium ions are transported across the cell membrane. A. 50 B. 100 C. 150 D. 200
Answer:
150
Explanation:
each atp moves 3 Na+ and 2 K+ molecules
According to the chart on the content page, which biological molecules have carbons in a ring shape as a part of their structure?
que son los radicales
Answer:
un radical es un átomo, molécula o ión que tiene un electrón de valencia no apareado. Con algunas excepciones, estos electrones desapareados hacen que los radicales sean altamente reactivos químicamente.
Explanation:
Digestion of food and batteries are an example of which type of energy?
A. Chemical
B. Kinetic
C. Heat
D. Electrical
Because the Earth is tilted on its rotational axis, both the Northern and Southern Hemispheres experience seasons. As the Earth revolves around the Sun, the angle at which sunlight hits each of these hemispheres changes.
The Sun appears _______ in the sky and for a _______ period of time each day during winter than it does during summer.
A.
higher; shorter
B.
lower; shorter
C.
higher; longer
D.
lower; longer
Answer:
b
Explanation:
Removing a specific group of trees within a small area over a long period of time is
Answer:
Deforestation
Explanation:
Deforestation
How does phosphorus normally enter the atmosphere?
a)respiration
b)transpiration
c)bacteria fixation
d)It does not enter the atmosphere.
The answer is d, it does not enter the atmosphere.
A marine biologist took a sample from a hot spring. The cell has no nucleus and looks different from bacteria found in water
Answer:
archaea
Explanation:
Answer:
The answer is archaea.
Explanation:
I take a quiz in edge.
hop it helps!
what is the key to stabilizing global population?
Patio and papio cynocephalus do not belong in the same
Patio and papio do not belong in the same species.
What roles do species play in ecosystems?
There are some species in every ecosystem that are necessary for the other species in the system to survive. The ecosystem may not be able to continue functioning without the keystone species, which could be a small plant or a large predator.
What are keystone species ?
Scientists may argue over which organisms or plants in a given ecosystem should be called a keystone species because a keystone species does not have a formal name. The idea, according to some wildlife scientists, oversimplifies the role of a single animal or plant in intricate food webs and habitats. On the other hand, referring to a specific plant or animal as a "keystone species" in an ecosystem is one way to educate the general public about how crucial one species can be to the continued existence of numerous others.There are three sorts of cornerstone species referred to by numerous researchers: mutualists, ecosystem engineers, and predatorsThe "keystone" is regarded as one of the most crucial components in any community or arrangement. An organism that contributes to the stability of the system is known as a keystone species in any kind of ecosystem, including marine ecosystems. Ecosystems would look very different without its keystone species. If their keystone species vanished, some ecosystems might not be able to adjust to changes in the environment. That could result in the ecosystem's demise or it could allow an invasive species to take control and significantly alter the ecosystem's course.To know more about keystone species check this:
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Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following might help reduce nitrate pollution? Use of synthetic fertilizers often leads to the contamination of groundwater with nitrates. Nitrate pollution is also a suspected cause of anoxic "dead zones" in the ocean. Which of the following might help reduce nitrate pollution? adding nitrifying bacteria to the soil using ammonia instead of nitrate as a fertilizer growing improved crop plants that have nitrogen-fixing enzymes adding denitrifying bacteria to the soil
Answer:
adding denitrifying bacteria to the soil
Explanation:
Denitrifying bacteria refer to microorganisms in soil that carry out the conversion of nitrates in soil to free atmospheric nitrogen.
Nitrogen gas (N2) is ultimately the product of denitrification of soil, however certain intermediate nitrogen species are also formed in the process. Some of these intermediates may include the following sequence of conversion; NO3− → NO2−→ NO + N2O → N2.
The chemical equation for denitrification is; 2 NO3− + 10 e− + 12 H+ → N2 + 6 H2O.
True or False. If gametes were produced in the same way as daughter cells in mitosis, there would be a doubling of the chromosome number at fertilisation.
Answer:
true im pretty sure
Explanation:
-Also this is science- Which substance would heat up the most during a sunny day, and why?
Air, because it needs the most amount of energy to raise its temperature.
Seawater, because it needs the least amount of energy to raise its temperature.
Sand on the shore, because it has a relatively low specific heat.
Fresh water, because it has high specific heat
Answer: C.
Explanation: Sand because solid molecules are the closest together, and thus causing heat to transfer the fastest.
Answer: C.
Explanation: Sand because solid molecules are the closest together, and thus causing heat to transfer the fastest.
RNA is chemically similar to DNA except that its sugars have an additional oxygen atom,
and the base thymine is replaced by a structurally similar base called
I can give you one answer and that is that im sure the answer has a weird name so sara is out of the question.
Dwayne is making a cladogram using a diagonal line.
Where should he place the least primitive organism?
E
A
B
D
PLEASE HURRY I REALLY NEED HELP BEFORE MY TEST!!!
Answer:
the answer is e on the test
hope this helps
Dwayne is making a cladogram using a diagonal line. He should place the least primitive organism in E. The correct option is A.
What is a cladogram?Diagrams are called cladograms to show the relationships between various taxonomic groups known as "clades." Cladograms reconstruct the taxa's evolutionary history (phylogeny) by showing these relationships. Phylogeny and trees are other names for cladograms.
Using the term "cladogram" emphasizes to some biologists that the diagram represents a hypothesis about the true evolutionary history of a group, whereas "phylogenies" represent true evolutionary history.
A cladogram's root, clades, and nodes are its most important components. The root is the first ancestor shared by all groups that branched off from it.
Therefore, the correct option is A, E.
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If conducted accurately identical investigations should produce similar results. Sometimes, errors like measurement errors, can
cause differences in results
Sandra and Jeremy are neighbors who tested different brands of seeds in their gardens for six weeks. They grew identical gardens
in their yards and recorded results. Each of them tried three brands of pea plant seeds and recorded the plants' heights at the end
of each week. They discovered Jeremy's plants were much taller on average than Sandra's plants every week.
Which statement describes a measurement error that may have caused such a significant difference in their results?
Sandra recorded her measurements in centimeters, while Jeremy recorded
his measurements in inches.
They both took measurements on Fridays, but Sandra took hers at 4:00 PM
and Jeremy took his at 5:00 PM
Sandra used a measuring tape to collect data, while Jeremy used a wooden
tuler to take his measurements
mining
D
Sandra measured her plants from the ground while Jeremy measured his
plants from the ends of their roots
Answer:
D Sandra measured her plants from the ground, while Jeremy measured his plants from the ends of their roots.
Explanation:
The statement that describes a measurement error is Sandra measured her plants from the ground while Jeremy measured his plants from the ends of their roots.
What do you mean by Seeds?Seeds may be defined as the unit of reproduction of a flowering plant, capable of developing into another such plant.
Three brands of pea plants are grown in the field of equal dimension, still, there may be a difference in their height that must be identified. This is surely due to a measurement mistake.
Therefore, it is well described above.
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The body works to maintain homeostasis in response to what conditions?
Answer:
so the body works to maintain homeostasis in response to internal or external conditions
Explanation:
Homeostasis is the process of maintaining a stable internal conditions, Homeostasis keeps internal conditions just right for cell function.
Its like if your hot your body with sweat to cool you down
OR
when your cold you shiver which contracts the things inside of your body so your body contains more heat rather than releasing it
An example of Homeostasis in response to internal conditions is:
when your body produces too much glucose, your body releases insulin to bring the level of glucose down
and when there isnt enough glucose your body releases glucagon to bring up the level of glucose to stable your blood sugar
Homeostasis has been the bodily process that is involved in maintaining the environment of the body. The body works to maintain homeostasis in response to internal and external changes.
What is homeostasis?Homeostasis has been defined as the steady internal environment for the maintenance of physiological processes. This involves the optimization of the variables and carious functions so that equilibrium can be achieved.
The factors involved in homeostasis are pH levels, temperature, glucose, etc. It has been the response of the cell towards the external environment so as to maintain balance. The homeostatic range is important for the proper functioning of the body.
The changes in the internal and external environment affect homeostasis as an increase in temperature in summer leads to sweating and a decrease in temperature in winter leads to shivering. It uses the feedback mechanism to maintain equilibrium.
Therefore, the process of homeostasis is in accordance with internal and external changes.
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what is quardratic equation ??express its formula .....!please gyus follow me
Question: Maya designed an experiment to see how much rain falls off the leaves of plants of this type. She placed collecting trays under the leaves and experiment could be repeated. Which of these is NOT a reason why is it important that Maya's experiment can be repeated by someone else. A.to prepare for future experiences B. to show all the error she made in her experiment
C. so other people can see if result were correct D. so other can develop their own search of her work.
Answer: D (so other can develop their own search of her work.)
Someone else does not need to develop their own search of Maya's work. Maya has already completed the experiment. So, the answer to the question should be option D.
Hope this helps!
The trp operon encodes the genes required to synthesize tryptophan. This operon is regulated by a feedback loop in which tryptophan binds to a transcriptional regulator leading to a change in gene expression from the operon. This is most likely an example of__________. a. inducible gene expression b. repressible gene expression c. constitutive gene expression d. post-translational regulation of gene expression
Answer:
The correct answer is option b. "repressible gene expression".
Explanation:
The trp operon is a classic example of a repressible gene expression. The trp operon controls the biosynthesis of tryptophan from an initial precursor by encoding five genes that translate to three enzymes. These enzymes act as regulators and tryptophan itself acts as the final regulator. Tryptophan inhibits its own production when it binds to the transcription regulator, therefore it is an example of a repressible gene expression.
2. What is the dependent variable?
O The color of light
O The amount of water
O the number of leaves
O The species of plant
Answer:
I want to sat the number of leaves
Explanation:
I'd have to see like the whole question and background information though-
what amino acids are non degenerate?
Answer:A position of a codon is said to be a non-degenerate site if any mutation at this position results in amino acid substitution. ... There are three amino acids encoded by six different codons: serine, leucine, and arginine. Only two amino acids are specified by a single codon each.
Explanation:I'm kinda confused about your questions, I think this is what your asking for. Hope this helps, if not. I'll try redoing it! :))
Which of the following is NOT one of the potential mechanisms allowing kin recognition among animals? Group of answer choices kin-differential spatial association, so that kin are reliably found in a given place phenotype matching, whereby kin are identified through comparison of their phenotypic attributes with those learned from reliable kin, including oneself kin-differential familiarization, whereb social familiars are treated as relatives. kin-branding, whereby all individuals are labeled actively by each other at birth so that kin can be discriminated from nonkin. genetic similarity detection, whereby phenotypic labels are correlated with one's underlying genotype, allowing for kin discrimination based on that.
Answer:
The correct answer is "kin-branding, whereby all individuals are labeled actively by each other at birth so that kin can be discriminated from nonkin".
Explanation:
Kin recognition, also known as kin detection, is an ability developed by some animals to detect organisms that are genetic related and discriminate among other animals that are not (nonkin). There are some mechanisms that animals use for kin recognition, however labeling actively each other is not one of them. In most cases, animals use kin recognition based on pheromonal cues.
Ways to calculate an "average" include
A. mean, median, and mode
B. mean, median, and percent
C. mean, percent, and mode
D. percent, median, and mode
The energy used in photosynthesis come from what??
Answer:
chloroplasts.
Explanation:
Chloroplast
Chloroplasts are organelles that conduct photosynthesis, where the photosynthetic pigment chlorophyll captures the energy from sunlight, converts it, and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water in plant and algal cells. They then use the ATP and NADPH to make organic molecules from carbon dioxide in a process known as the Calvin cycle. Chloroplasts carry out a number of other functions, including fatty acid synthesis, much amino acid synthesis, and the immune response in plants. The number of chloroplasts per cell varies from one, in unicellular algae, up to 100 in plants like Arabidopsis and wheat.
In rats, gene B produces black coat color if the genotype is B–, but black pigment is not produced if the genotype is bb. At an independent locus, gene D produces yellow pigment if the genotype is D–, but no pigment is produced when the genotype is dd. Production of both pigments results in brown coat color. If neither pigment is produced, coat color is cream. Determine the genotypes of parents of litters with the following phenotype distributions. Part A 4 brown, 4 black, 4 yellow, 4 cream
Answer:
Bbdd and bbDd
Explanation:
From the illustration:
B_dd - black color
bbD_ - yellow color
B_D_ - brown color
bbdd - cream color
In order to produce litters in the ratio 4 brown, 4 black, 4 yellow, and 4 cream; the genotypes of the parents must be Bbdd and bbDd. The cross between the two parents would be such that:
Bbdd x bbDd
4 BbDd - brown color
4 bbDd - yellow color
4 Bbdd - black color
4 bbdd - cream color
See the attached image for the Punnet's square analysis of the cross.
Which statement best describes weather?
A The temperature is increasing as the cloud cover decreases.
B Wind speeds are greatest during the spring.
C Since 1970, yearly rainfall averages are lower than usual.
D Flash flooding has increased in many areas during the last few decades
