Answer:B
Explanation:
what has caused a 90 ecrease in southern california steelhead run sizes?
Answer:
The cause of the 90 decreases in southern California steelhead run sizes are because of the dams along the water sources and it has cause 90% decrease in the southern California steelhead run sizes. The Dam alter aquatic ecology cause the river hydrology up steam and down steam which cause the affecting water quality.
The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.
What is a dam?The dam is a large structure that serves the purpose of holding back water and making its level to rise quite high. Dams could be used for the purpose of electricity generation.
The reason why the Southern California steelhead run sizes has decreased by 90% is the construction of dams along water sources.
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what started human life on Earth?
Answer:
Explanation:The origin of human beings from far more primitive ape-like precursors is one — just one — of the definitions of “evolution” that the public and the media carry around in their heads. Not surprisingly, the iconic transition from ape to man is the first, second, and third image.
While operating a vehicle on any highway of this state, it it illegal to physically hold or support a wireless device with any part of the body
True. While operating a vehicle on any highway of this state, it it illegal to physically hold or support a wireless device with any part of the body
What is driving rules?
These are the basic guides used by US government to control accident or reckless driving on the roads.
Some of the basic driving rules include the following;
Vehicles drive on the right hand side of the road. Pass others on the left hand side of the road. All occupants in a vehicle must wear a seat belt. Right turn is permitted at red traffic lights, but only after stopping, unless signed otherwise.Don't support a wireless device with any part of the bodyThus, the statement is true.
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The part of the vertebrae that transfers weight along the axis of the vertebral column is the:.
The part of the vertebrae that transfers weight along the axis of the vertebral column is the:. vertebral body
What is the vertebral body?
The vertebral body serves as a weight-bearing part of a vertebra. The vertebral body is a thick and disc-shaped structure and forms the anterior portion of the vertebrae.
A vertebral body has rough inferior and superior surfaces. Being disc-shaped, the vertebral bodies of subsequent vertebrae are stacked upon each other and thereby, serve to carry the weight.
Thus, the vertebral body is the answer.
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Backward (opposite of its normal direction) flow of a body fluid is _______.
The backward (opposite of its normal direction) flow of a body fluid is called reflux.
What is reflux?Reflux refers to the opposite movement of a body fluid during physiological functions.
For example, acid reflux refers to the burning sensation due to the movement of stomach acid to the throat.
In conclusion, the backward (opposite of its normal direction) flow of a body fluid is called reflux.
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According to the results for Patient 3 shown above, which antigens were present in Patient 3’s blood? Check all (if any) that apply. A antigen B antigen Rh antigen
Patient 3 blood contains A antigen and Rh antigen.
What antibody-antigen reactions?Antibody-antigen reactions are reactions which occur when matching antigens and antibodies are mixed together.
In blood, antigen-antibody reactions result In agglutination of blood.
In the image shown, when Patient 3 blood is mixed with anti-A and anti-Rh aggluitination occurs, but no agglutination occurs with anti-B.
Therefore, Patient 3 blood contains A antigen and Rh antigen.
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Answer: B Antigen
Explanation: Other answer is wrong lol
A botanist scrapes pollen off of one plant and then use it to pollinate the flower of another plant . What can scientifically conclude about other offspring
A botanist scrapes pollen off a flower of one plant and then uses it to pollinate the flower of another plant. What can be scientifically concluded about their offspring?
A. They will have a large amount of genetic variation.
B. They will have twice the number of chromosomes as their parents.
C. They will be genetically distinct from their parents.
D. They will be able to reproduce only asexually.
Plants' xenogamous system has high probabilities of introducing genetic variation between plants. Option A) They will have a large amount of genetic variation.
What are the crossing systems in plants?There are two general crossing systems in plants, which depend on pollination type.
Self-pollination occurs when the flower pollen is transferred to the same flower stigma, reaching that individual egg to fertilize it. These are autogamous systems. Crossed pollination occurs when the mature pollen is driven by different pollinator agents from one flower to another, reaching the other flower stigma and fertilizing its eggs. These are xenogamous systems.
Sexual reproduction gives more possibilities to different alleles of a gene that did not appear in one generation to express in the next generation.
Both types of pollination allow genetic variation, however by the occurrence of crossed pollination there are more chances to ensure the variability of the species and survival to environmental changes.
While by self-pollination there are more chances to express the same genotype of the parental plant.
The Xenogamous system has the advantage of avoiding the effects of endogamy in a population by increasing genetic variability.
In the exposed example, the botanist is acting as the pollinator agent, allowing one plant's pollen grain to fertilize the egg of the other plant.
The merging of these gametes will introduce variation since there will new allelic combinations.
The correct option is A). They will have a large amount of genetic variation.
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________ can reduce dopamanergic activity and manic episodes.
Exercise can reduce dopamanergic activity and manic episodes.
what is it like to be a bipolar person?Bipolar Disorder, intended for Manic-Depressive Illness, is an illness that can alter mood with repeated bouts of opinion and "mania". Either of the two types of crisis can predominate in the same person and its frequency is quite variable.
In this case, to help prevent a manic episode is necessary to avoid triggers such as caffeine, alcohol or drug use, and stress, most importante is exercise.
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State one function of the pancreas (Please do not copy and paste and keep the answer simple)
what do sensory neurons do with the information from the receptors ?
According to the research, sensory neurons transmit the information from the receptors to the spinal cord.
What are sensory neurons?They are those neurons located in sensory organs or in areas of the nervous system related to the integration of sensations.
These transmit the information from receptors in the body's tissues and sensory organs to the spinal cord.
Therefore, we can conclude that according to the research, sensory neurons transmit the information from the receptors to the spinal cord.
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what are haploid and diploid cells?
Answer:
Explanation:
Haploid Cells
Haploid cells contain only one set of chromosomes. Gametes or sex cells are the most common type of haploid cells. They are produced by meiosis and are genetically diverse. When the haploid cells from male and female fuse together during fertilization, it forms a diploid cell.
Diploid Cells
These cells have two sets of chromosomes. It is formed by the fusion of two haploid cells. Most mammals are diploid, i.e., they have two homologous copies of each chromosome in the cells. They are produced by mitosis. The somatic cells in humans are diploid cells.
What are the types of energy emitted by the sun
Answer:
solar radiation
Explanation:
Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays.
How are fossil fuels, such as coal, formed?
Fossil fuels, such as coal, are formed through deposition of
rocks.
A: metamorphic
B: igneous
C: sedimentary
D: clastic
Which macromolecules make up most of the structure that is shown?
A) carbohydrates
B) lipids
C) nucleic acids
D) proteins
Answer:
I believe its either lipids or proteins.
Explanation:
Sorry if I'm wrong!
Which of the following describes a limiting factor of population size?
A. Birth rate
B. Death rate
C. Gestation
D. Water availability
Homeostasis refers to:
Answer:
A stable condition
Explanation:
Dictionary Definition- a tendency toward a relatively stable equilibrium between interdependent elements, especially as maintained by physiological processes
Answer:
A Stable Condition
What is Homeostasis?
The tendency of a system, especially the physiological system of higher animals, to maintain internal stability, owing to the coordinated response of its parts to any situation or stimulus that would tend to disturb its normal condition or function.
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VALUE BASED QUESTION (Write in about 50-100 words)
Consider the following two cases: (Please give answer ASAP)
(i) A forest that is rich in biodiversity sees a decline in the animal population and clearing of a large
part of the forest. The Government declared it as a biodiversity hotspot and the forest regained its
species richness in few years.
(ii) A lake that is rich in marine fishes sees a decline in its species population due to over harvesting.
The people living in the area made the lake a sacred grove and started worshipping it. The species
population of the lake again became normal.
Answer the following questions based on the above information:
(i) Which values are being promoted in the above cases?
Case 1:-
Case 2:-
(ii) Suggest some ways in which you can contribute to this concern.
Case 1:-
Case 2:-
(iii) What would have been the effect if the forest was not declared a biodiversity
hotspot?
The value that can be withdrawn from case 1 is the activeness of the government that takes some crucial steps to maintain the biodiversity of the forests. The value that can be withdrawn from case 2 is the sincerity of native people towards nature who make a lake a sacred grove and start worshipping it in order to maintain the biodiversity of that lake.
What is Biodiversity?Biodiversity may be defined as the sum total of all the living entities living in a particular area at a given time.
For maintaining the biodiversity of the forest as well as a lake, it is required not to deteriorate the natural ecosystem of those regions by human activities like over grazing, forest fires, over harvesting, industrialization, etc.
If the forest has not been declared a biodiversity hotspot, the time will not be far to announce that a forest becomes a bare area, where no species live, survive, and reproduce naturally.
Therefore, it is well described above.
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What makes a vertebrate chordate different from an invertebrate chordate?
Vertebrate chordates differ from invertebrate chordates by the presence of the vertebral column.
Vertebrate vs invertebrate chordatesChordates are of two groups - vertebrates and invertebrates.
The vertebrate chordates have vertebral columns which developed from the notochord.
The invertebrate chordates, even though possess notochords at some points in their life, do not have vertebral columns.
Vertebrate chordates include fishes, birds, reptiles, and mammals. Invertebrate chordates include the tunicates and the lancelets.
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How does water enable substances to pass through a cell membrane? How does water enable substances to pass through a cell membrane ?
Answer/Explanation:
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Source:
https://www2.estrellamountain.edu/faculty/farabee/biobk/biobooktransp.html#:~:text=Water%2C%20carbon%20dioxide%2C%20and%20oxygen,to%20cross%20the%20cell%20membrane.
Hope this helps!
Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis.
What is Cell membrane?
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment.
A semipermeable lipid bilayer makes up the cell membrane. The movement of materials into and out of the cell is controlled by the cell membrane. The plasma membrane, or the cell membrane, provides protection for a cell. It also provides a fixed environment inside the cell, and that membrane has several different functions.
Therefore, Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis.
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How is sucrose moved in sink?
The sucrose moved in sink by active transport.
What is active transport?Active transport is a type of transport in which the cell expends energy to move solutes against their concentration gradients. The sodium-potassium pump is an example of active transport. Active transport differs from passive transport in that the cell does not expend energy.
In this case, the sucrose moves from companion cells in sink elements by active transport. This reduces the water potential of the sink element by osmosis, which increases the hydrostatic pressure.
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Two different bacterial samples, a and b, were inoculated onto simmons citrate agar. What conclusions can you make?
Bacteria sample A utilizes citrate while sample B does not.
What is the result of a simmons citrate agar?Simmons citrate agar is a nutrient agar which contains the compound sodium citrate as a carbon source for microorganisms.
It is used to differentiate bacteria based on their use of citrate as a sole source of carbon.
A positive result for for citrate utilization will change the agar from green to blue while a negative result will remain green.
Therefore, since bacterial sample A produced a blue color while sample B agar remained green, A utilizes citrate while B does not.
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The __________ nervous system is the subdivision of the peripheral nervous system that regulates body activities that are generally not under conscious control
The autonomic nervous system is responsible for regulating involuntary body activities.
The nervous system coordinates the bodily functions of muscles to produce actions.Involuntary activities such as circulation, heartbeat, digestion, breathing, and peristalsis for example are generally not under our conscious control.
These are otherwise known as involuntary actions controlled by the autonomic nervous system which in turn is a subdivision of the peripheral nervous system (this system branches off the spinal cord to all other parts of the body.
Other parts of the nervous system would be the central nervous system divided into:
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Which of the following is NOT true of viruses?
A. Some viruses have a membrane envelope.
B. Viruses need a living cell to reproduce.
C. Some viruses live through the lytic cycle.
D. Some viruses contain both DNA and RNA.
Some viruses contain both DNA and RNA as their genetic material is NOT true of viruses (option D).
What is a virus?A virus is a non-living entity that needs a suitable host to reproduce its genetic material (DNA or RNA).
Viruses may contain a genetic material composed of other DNA or RNA but not both.
In conclusion, some viruses contain both DNA and RNA as their genetic material is NOT true of viruses (option D).
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What are the reactants for Anaerobic Respiration?
The primary reactant of aerobic respiration is glucose.
Anaerobic respirationThis refers to respiration in the absence of oxygen.
Without oxygen, glycolysis of the glucose molecule will take place just like in aerobic respiration.
However, instead of the pyruvate molecules moving into the Kreb's cycle, they are instead, converted to one of lactic acid or ethanol.
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What is the function of lysosomes?
Answer:
To break down bacteria
Explanation:
Answer:
it contains lytic enzymes that destroy aged and unwanted cell organelles. it sometimes destroys the entire cell.the key point is it destroys aged and unwanted cell organelles.
Give reason for diversity of angiosperms
ANSWER
Both flowing plants and animal pollinators are incredibly diverse. One reason for this diversity is the close
relationship they have with one another. Over many years, some flowers and pollinators have influenced each
other's evolution. Today, when flower-pollinator pairs have traits that work very well together, it's a sign
this kind of evolution may have happened.
animal viruses often have glycoprotein spikes on their capsids or envelopes. group of answer choices true false
According to the research, the statement is true, animal viruses often have glycoprotein spikes on their capsids or envelopes.
What are viruses?It is an obligate intracellular parasite, small in size, made up of nucleic acid and protein.
They have a layer or envelope of lipids and glycoproteins, which they obtain from the cell membrane of their host cells, and which is used to inject genetic material into the cell.
Therefore, we can conclude that according to the research, the statement is true, animal viruses often have glycoprotein spikes on their capsids or envelopes.
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What is the purpose of
statistical analysis?
A. to compare the data to the hypothesis and the
difference between the expected values and the
results
Hope
C. to list the observations of the experiment and
develop a hypothesis
B. to state the best possible outcome of the
experiment
D. to organize the data from the experiment into
a chart
Answer:
A.
Explanation:
In mitochondrial electron transport, what is the direct role of.
Answer:
O2 participates in cellular respiration
Explanation:
The only place that O2 participates in cellular respiration is at the end of the electron transport chain, as the final electron acceptor. Oxygen's high affinity for electrons ensures its success in this role.
Why does diversity increase as height above land increases
Biodiversity rises with altitude initially before falling with height beyond that. Up until it reaches a diversity peak at about 1 300 to 1 800 m.
The biodiversity increases at higher geographical locations because There are more hiding locations. They are better for crop growth. They frequently include more than one kind of habitat.As latitude or altitude change, so does biodiversity. As we descend from high to low elevations, the diversity increases (i.e., from poles to equator). While the environment is harsh and plants have a brief growing season in the temperate region, tropical rain forests provide year-round growth-friendly circumstances. This enables the emergence and expansion of several species. On a mountain, there is an initial increase in species diversity after which there is a decline in species variety as you go up in elevation. At higher elevations, temperature drops and seasonal variations increase, which significantly diminishes.learn more about biodiversity here: https://brainly.com/question/26110061
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