Answer:
selection favored lighter skin
Explanation:
This delicate balancing act explains why the peoples that migrated to colder geographic zones with less sunlight developed lighter skin color. As people moved to areas farther from the equator with lower UV levels, natural selection favored lighter skin which allowed UV rays to penetrate and produce essential vitamin D.
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the genetic makeup of a species is called-
the genetic variation that exists between a species is called-
the diversity of ecosystems, communities, and habitats is known as-
Answer:
i put makeup of my dog and on my cow i love to jump over the sun for joy
Explanation:
Siamese cats and Himalayan rabbits have light-colored bodies but darker-colored paws, ears, and tail due to an enzyme whose activity varies with temperature. This is an example of ______.
The special features in the Siamese cats and Himalayan rabbits is an example of adaptation.
What is adaptation?Adaptation refers to the special features or structures that an organism possesses which makes it better suited to survive and reproduce in its environment.
Adaptations helps an organism to:
find foodfind matesavoid predators survive extreme climatic conditionsThe features in the Siamese cats and Himalayan rabbits due to enzyme activity that varies with temperature is an example of adaption.
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How could Flor explain why all three species share some body structures and have some differences? Why do only house geckos and Pacific gulls have two temporal holes in their skulls?
The similarities in the structure of the three species is due to their sharing a common ancestor while the differences is due to adaptation.
What is divergent evolution?Divergent evolution is evolution where individuals who shared a common ancient ancestor process to have differing structures due to differences in their habitats.
All three species that Flor observed having similar structures is because they had a common ancestor.
The species had differences because they evolved to adapt to their different environments.
Wall geckos and Pacific gulls have temporal holes in their skulls as adaptations to their habitat.
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What is the competitive exclusion principle?
Due to a genetic modification, a mouse has no horizontal cells in its retinas. What impact will this have on the mouse’s vision?
Answer:
Below
Explanation:
Horizontal cells are the laterally interconnecting neurons having cell bodies in the inner nuclear layer of the retina of vertebrate eyes. They help integrate and regulate the input from multiple photoreceptor cells. Without them you wouldn't be able to see color, which means the mouse won't process color.
Due to a genetic modification, a mouse has no horizontal cells in its retinas and it does not expresses the connexin26.
What is horizontal cells?
The horizontal cells has receptive field with the neurobiotin and controlled by the electrical coupling.
Horizontal cells are the laterally interconnecting neurons having cell our bodies withinside the internal nuclear layer of the retina of vertebrate eyes. They assist combine and alter the enter from a couple of photoreceptor cells.
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What do you notice about each beaker?
Answer:
The more sugar added to each beaker, the more active the yeast becomes.
how is an increased in carbonin the atmosphere likley to affect coastal areas such as those in north carolina
Answer:
D
Explanation:
The amount of Carbon dioxide (CO₂) that is trapped in the atmosphere is released by the burning of the fossil fuels and from the industrial pollution. In addition to this, some amount of it also released by the animals and human beings. This stored CO₂ in the atmosphere is then transported to the oceans with the help of rainfall. When this CO₂ reacts with water it forms weaker acid, which is commonly known as the Carbonic acid. Due to this, the pH level of ocean water decreases. As a result of this, it affects the ocean water chemistry and the marine life. Due to this ocean acidification, the marine species namely the corals and various types of planktons are not able to form the hard parts like the shell and skeletal parts. This carbonate water dissolves the existing shells and erodes the particles away. The increase in the carbon content in the atmosphere will also lead to precipitation that will wash away the rock particles and other sediments, that are present in the coastal areas. In addition to this, the plants also will be affected due to this carbon containing water.
The storage polysaccharides are ________ in plants and ________ in animals.
Answer:
I think it's
The storage polysaccharides are starch in plants and glycogen in animals.
Which is not an example of a particular phenotype being the reason a species has survived in their environment?
Q.
Which is NOT an example of a particular phenotype being the reason a species has survived in their environment?
A-A black wolf in a pack of grey wolves in the forest
What three things would you take with you during the zombie apocalypse and why?
In order to survive, the basic things needed in a zombie apocalypse is food, water and a self-defense object.
What is a zombie apocalypse?A zombie apocalypse is an imaginary scenario in the future where the dead comes back to hunt the living with the intent to destroy all life.
Since survival is the most important consideration in a zombie apocalypse, one would need these three things:
waterfoodand an instrument for self-defense.Therefore, the basic things needed in a zombie apocalypse is food, water and a self-defense object.
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In an experiment investigating the time needed to kill a certain type of bacteria at 100°, which of the following variables need to be controlled?
time only
temperature and type of bacteria only
temperature only
time and temperature only
Baed on the nature if the investigation, the temperature and type of bacteria need to be controlled in this experiment.
What are variables in an experiment?Variables are quantities whose values determine the result or can affect an experiment.
Variables may either be:
dependent variableindependent variable constant variableSince the experiment is investigating the time needed to kill a certain type of bacteria at 100°, the temperature and type of bacteria need to be controlled.
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A cell that does not have a true nucleus or membrane bound organelles.
Answer:
A prokaryotic cell is a simple, single-celled (unicellular) organism that lacks a nucleus, or any other membrane-bound organelle.
This type of greeting has less germ transmission. When doing an elbow bump, what bones are touching?
Carpals to Carpals
Humerus to Humerus
Ulna to Ulna
Radius to Radius
Based on anatomical positions, in an elbow bump, the bones touching are Ulna to Ulna.
What are the bones at an elbow joint?The elbow joint is made up of the upper arm bone, the humerus and one of the bones in the lower arm, the ulna.
An elbow bump is a form of greeting done wherein the elbows are bumped together.
The Ulna is the prominent bone that comes in contact when two persons do an elbow bump.
Therefore, in an elbow bump, the bones touching are Ulna to Ulna.
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Which of these is a threat to the survival of an ecosystem A.less biomass at higher levels of the food web B. competition among some consumers population C.a shrinking variety of animal and plant species D.predator prey population cycles
Answer:
Answer: C) In an ecosystem, prey and predator populations affect each other.
Think of cause and effect: The wolves keep the deer population in check because they hunt them. If the wolf population increases, the deer population goes down. If you reduce the number of wolves than the deer population goes up.
Hope this helps :)
Explanation:
The process of making changes in the dna code of a living organism is called.
Non-flowering plants are known as seedless plants
Answer:
i would say True Beauce there put in the same category
(Non-flowering and seedless plants are known as cryptogams)
A recent increase in pesticide use has resulted in a decrease in the local bat population. What is the BEST explanation for the decreased bat population?
1. Bat food supply decreased.
2. Bat food supply increased.
3. Infection with the pesticide destroyed most of the bat population.
4. Many bats have moved into the area.
Answer: 1. (A bat food supply decreased.)
Explanation:
Energy cannot be produced by fungi and heterotrophic organisms
Answer:
No they cannot
Explanation:
Fungi, which are also heterotrophs as well as other heterotrophic organisms cannot produce their own energy for their own function because they do no make their own food. That is they do not have chloroplasts and therefore obtain energy from autotrophs ( organisms that make their own food for energy)
Explain what is meant by the "health of a population”. What affects the health of a population?
Answer:
Population health is defined as the health outcomes of a group of individuals, including the distribution of such outcomes within the group.
How can failing to conserve water contribute to greater water contamination? a. overirrigating fields causes an increase in pollution that results from runoff. b. natural water filters are depleted by the overuse of water. c. sewage systems are more likely to fail due to greater demand, causing higher chances of water contamination. d. all of the above please select the best answer from the choices provided a b c d
Due to scarcity of water, humans will take any way to get to the water as it's miles crucial for survival. The correct solution desire is :D) All of the above.
The Safe Drinking Water Act describes a contaminant as any physical, chemical, organic, or radiological fabric that relies on water. Some contaminants can be poisonous if used at numerous stages in consuming water. Waterborne infections are caused with the aid of using consuming infected or grimy water.
What is contaminate water effect?Contaminated water could make many varieties of diarrheal syndromes, which include Cholera, and different excessive sicknesses consisting of Guinea malicious program infection, Typhoid, and Dysentery. Water-associated ailments make 3. four million deaths every year.
Thus it is clear that d is all answers are correct.
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The photo shows frog eggs at the edge of a pond.
Which two factors might keep some of the eggs from becoming adult frogs
that produce their own eggs?
Answer:
a
Explanation:
Pea plants can have yellow seeds or green seeds. which conclusion about the meaning of y is correct if the allele combination yy is for yellow seeds? yellow and dominant green and recessive yellow and recessive green and dominant
Pea plants can have yellow seeds as the meaning of y is correct if the allele combination yy is for yellow seeds are yellow and dominant.
This question involves a seed color gene, which has two alleles Y and y. Y, which represents the dominant allele codes for the YELLOW trait while y which represents the recessive allele codes for the GREEN trait. Therefore, a plant with Yy will have YELLOW SEEDS because the dominant Y allele is present.
What are two alleles?Gregor Mendel has stated that a gene comes with two alleles. According to his law of dominance, one of the alleles called the DOMINANT allele is capable of masking the phenotypic expression of another allele called the RECESSIVE allele.
Thus it is clear that yellow and dominant are the meaning of y is correct if the allele combination yy is for yellow seeds.
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Answer:
its A yellow and dom
Explanation:
just took the test edg spr 22
10.A 600 kg great white shark is lurking below an observation cage. His movement is
being studied from a series of motion sensors below the boat. The shark leisurely
charges the cage, strikes it and makes the cage rattle. Later, the shark returns for
another run at the cage. The shark strikes the cage with 12,800 N of force. The
shark traveled for 10 m in making its run. The cage is designed to withstand
124,500 J of "work" before it breaks. Should the man in the cage be worried?
Explain.
The work done by the shark is 128000 J which is greater than the maximum force the cage can withstand (124500 J), the man in the cage should be worried.
What is work done?Work done is the product of force and the distance covered by the force.
Mathematically;
Work done = Force × distanceThe unit of work done is Joules.
The work done by the shark is calculated as follows:
Work done = 12800 × 10
Work done = 128000 J
Maximum force the can withstand = 124500 J
Since the work done by the shark is greater than the maximum force the cage can withstand, the man in th cage should be worried.
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Can taller people hold their breath longer than shorter people?
Answer:
it depends on like if they're doing any sport or no
Approximately how many kilograms (kg) of carnivore (secondary consumer) biomass can be supported by a field plot containing 1000 kg of plant material?
About 10 kilograms (kg) of carnivore biomass can be supported by a field plot containing 1000 kg of plant material.
What is an ecosystem?An ecosystem is a self-supporting system consisting of living and non-living components.
In an ecosystem, a carnivore is a secondary consumer.
In energy flow in an ecosystem, 10% of biomass is transferred from primary producer to primary consumer, 10% from primary consumer to secondary consumers.
Thus, 1% of energy is transferred to the carnivore.
1% of 1000 kg = 10 Kg.
Therefore, 10 kilograms (kg) of carnivore biomass can be supported by a field plot containing 1000 kg of plant material.
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Which principle of heat exchange is the most important explanation for why birds look larger in colder weather because they fluff their feathers?.
A particular triplet of bases in the template strand of dna is 5' agt 3'. The corresponding codon for the mrna transcribed is
The corresponding codon for the mRNA that is transcribed is referred to as 3'-UCA-5'.
What is a Codon?This is defined as a trinucleotide sequence of DNA or RNA that corresponds to a specific amino acid.
During transcription, the corresponding base for Adenine is Uracil, cytosine is to guanine and Thymine is to Adenine and 5'3' to 3'5'.
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The corresponding codon for the mRNA transcribed is 3'-UCA-5'. The corresponding mRNA lacks the nucleotide base thymine (T).
What do you mean by mRNA?mRNA may be defined as the molecules that carry the genetic information needed to make proteins.
During transcription, the template strand of DNA is transformed into the mRNA in the nucleus of the cell. mRNA consists of nucleotide bases Adenine, Guanine, Cytosine, and Uracil. Hence, the sequence of the strand gets reversed according to the template strand of the DNA.
Therefore, the corresponding codon for the mRNA transcribed is 3'-UCA-5'.
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What evidence will you look for during this experiment to help you determine the best concentration of saline for your patient?
(principle of biomedical science, activity 3.2.2.)
To help you determine the best saline concentration for your patient, it is necessary to know the dilution factor.
How to find the dilution factor?You can identify a solution dilution by the amount of solute in the total volume, expressed as a ratio. For example, a chemical substance can be prepared in a 1/10 (1:10) dilution of alcohol, indicating that a 10mL vial contains 1mL of the substance (solute) and 9mL of alcohol (diluent).
With this information, we can conclude that to help you determine the best saline concentration for your patient, you need to know the dilution factor.
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The best concentration of saline would be the one that does not result in a change in the cells' mass.
What causes hyperpolarization of a neuronal membrane?.
The cause of hyperpolarization of a neuronal membrane is the flow of positive ions out of the opening channel of the neuronal membrane.
What is hyperpolarization?
This can be defined as when the membrane potential becomes more negative at a particular spot on the neuron’s membrane.
The cause of hyperpolarization is when the flow positive ions out of the opening channel of the neuronal membrane can cause hyperpolarization.
Examples: Opening of channels that lets K+ flows out of the neuronal membrane or let's CL- flow into the neuronal membrane can cause hyperpolarization.
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Describe the change that occur in the skin to get rid of excess heat.
Answer:
brainly me
Explanation:
When we get too hot: Sweat glands in the skin release more sweat. The sweat evaporates , removing heat energy from the skin. Blood vessels leading to the skin capillaries become wider - they dilate - allowing more blood to flow through the skin, and more heat to be lost.
When heat activates sweat glands, these glands bring that water, along with the body's salt, to the surface of the skin as sweat. Once on the surface, the water evaporates. Water evaporating from the skin cools the body, keeping its temperature in a healthy range.
What do you mean by sweat glands?" Sweat gland is defined by a simple tubular gland of the skin that excretes perspiration, is widely distributed in nearly all parts of the human skin, and consists typically of an epithelial tube extending spirally from a minute pore on the surface of the skin into the dermis or subcutaneous tissues where it ends in a convoluted tuft."
What are the types of sweat glands?There are two types of sweat glands:
eccrineapocrine.What is the main function of sweat gland?"The primary function of sweat glands is to keep the core body temperature at approximately 37 °C by releasing sweat in a hot environment or during physical activity."
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