Answer:
More darker skins are more resistant to disease than lighter skins.
Explanation:
The skin color pigmentation is based on the genetic makeup that is biological factors and physiological factors such as solar insolation, heat humidity, and temperature. The human's skin color ranges from dark brown to lighter hues. The people who live near the tropics are much darker occurs due to the pigmentation of skin as compared to those that live near the arctic. The presence of melanocytes in the skin cells helps in deterring fitness and evolutionary traits.Help please
What impact to minerals have on your way of life?
Answer:
Just like vitamins, minerals help your body grow, develop, and stay healthy. The body uses minerals to perform many different functions — from building strong bones to transmitting nerve impulses. Some minerals are even used to make hormones or maintain a normal heartbeat.
1. Calculate the volume of a stone using the displacement method. The initial volume of the water in the graduated cylinder is 20 mL. When the stone was dropped in the cylinder, the water level rose to 25 mL.
5 mL
10 mL
15 mL
20 mL
2. Calculate the density of the stone in number question #1 if its mass is 20 g.
4 g / mL
5 g / mL
2 g / mL
6 g / mL
Therefore the volume of the stone is 5ml and the density is 4mg/ml.
What is Displacement Method ?The displacement method can be used to accurately measure the volume of the human body and other oddly shaped objects by measuring the volume of fluid displaced when the object is submerged.
It is given in the question that the initial volume of the water in the graduated cylinder is 20 mL.
When the stone was dropped in the cylinder, the water level rose to 25 mL.
The volume of the stone has to be calculated using the displacement method.
The volume displaced by the stone is 25-20 ml
= 5 ml
Therefore the volume of the stone is 5ml.
The density of any substance can be calculated by dividing its mass with its volume.
Mass given is 20g and the volume of the stone is 5ml
Therefore density = 20/5 = 4 gm/ml
Therefore Option A is the correct answer.
To know more about Displacement Method
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I am the layer of soil that is located underneath the topsoil. I have less humus than topsoil. What am I?
Answer: Subsoil
Explanation:
Please explain why the following statement is TRUE:
A species that lacks variation among its members is more likely to go extinct than a species
with a lot of variation in traits.
Choose the word from the box below that best matches up with each Earth system.
1. Atmosphere ______________________
2. Biosphere ______________________
3. Geosphere ______________________
4. Hydrosphere ______________________
Answer:
1. Atmosphere
air
2. Biosphere
life
3. Geosphere
earth
4. Hydrosphere
water
Answer:
Atmosphere- Air, Biosphere- Life, Hydrosphere - Water, Geosphere - Earth.
Explanation:
Not 100 % sure. Sorry if my answers are wrong. I tired my best. Have a great day
In 1935, cane toads were first introduced to Australia from Hawaii as a biocontrol agent. The toads were meant to replace the use of toxic pesticides to reduce the native cane beetle population that was decimating sugar cane, a valuable Australian crop. Since their release, however, cane toads have rapidly multiplied: over 70 years, the population increased from 100 individuals to over 200 million! The toads have devastated local ecosystems, including spreading diseases to native wildlife, preying on native fauna, and out-competing native insectivores for food. Additionally, no evidence has been found that they have had any effect on the cane beetles that they were meant to control. What type of growth model does the cane toad population follow?
Answer:
Exponential growth model
Explanation:
Populations that experience exponential growth models show an increase in proportion to their size. The increase in the population size depends on the individual´s reproduction rate: a population that grows at constant exponential rate gains individuals faster as the population increases in size.
This model states that populations live in an environment with unlimited resource availability, so the density factor does not influence population growth. There is no density-dependence effect nor competition for resources. Natality and mortality rate do not depend on density. There is a constant growth rate per capita, and it is proportional to the population size.
Exponential growth is hardly seen in nature due to its characteristics.
Almost every environment shows a carrying capacity point. Carrying capacity is the capability of the environment to support a population.
Commonly environments have limited resources and space, and as the population grows, competition increases too. The per capita growth rate is dense-dependent. Eventually, the population reaches the maximum point of carrying capacity, delimited by available resources, such as food or space.
The cane toad is an invasive omnivore species, feeding on anything, going from other animal species to invertebrates and vegetables. In urban areas, they might even feed on dogs food or human food wastes. The species characterizes by its high adaptative capability to different environments, the significant reproductive rate -leaving abundant offspring-, and the toxins produced in the parotids. For these traits, it has become a severe invasive species. Their poison is dangerous and painful, causing irritation of the skin and mucose, and many times, causing blindness. Predators get in contact with this toxin and get poisoned to death. Many native predators have suffered a reduction in their population size due to the effects of the Bufo toad. Also, as they prey on many other species, they eventually affect the ecosystemic equilibrium, driving many native species to extinction.
According to the description of the species and the information provided, we can assume that the population is going through exponential growth. Resources seem to be abundant enough, their reproductive rate is very high, and they are good competitors to native species. In 70 years, its population increased from 100 individuals to 200 million and still growing. It does not seem to be any limiting factor (or not yet at least), nor space nor food or shelter affecting the development. Unless there is something that might limit it, the species will keep showing exponential growth.
Which metal is found in alluvial soil?
PLS HELP ASAP
Which form of fresh water is not readily available?
A) groundwater
B) ocean water
C) glacial ice
D) surface water
E) river dam water
Answer:
probably glacial ice
Explanation:
What moves in one direction through an ecosystem rather than being used over and over again like nutrients are?
Answer:
I believe its energy - if im incorrect my apologiesss
Which substances are inputs in photosynthesis
Which of the following is a condiment that must be strictly kept in the refrigerator?
-mayonnaise
-mustard
-Parmesan
-ketchup
Answer:
mayonnaise
Explanation:
Mayonnaise contains eggs and spoils in the heat
State one specific environmental problem that can result from burning coal to generate electricity
Answer:
pollution and elimination of resources
Explanation:
If the sperm (haploid cell of an organism
contains 12 chromosomes, what would be the
number of chromosomes found in a regular body
(diploid) cell?
PLEASE HELP ME OUT I NEED HELP
Answer:
2-1 switched
Explanation:
Sally has brown hair (B), which is dominant to blonde hair. In addition, she is short, which is recessive to tall (T). Which combination of genotypes best describes Sally?
8. Many scientists believe that at one point in history, the polar bear was a close relative of the
brown bear and fossil samples show the connection. Over time, the species spread out into
different areas and became two entirely different species. Which is the most likely explanation
for this phenomenon?
A Polar bears were geographically isolated and over time their color has adapted to fit their
surroundings
B Polar bears color was caused by a genetic mutation and in order to survive the bears had to
migrate north
C Brown bears color was caused by a genetic mutation and in order to survive the bears had to
migrate south
D The similarities between the bears is an example of convergent evolution
Explanation:
I dint really understand the question I'm so sorry
15. How does a mother's age affect the likelihood of her having a baby with Down syndrome?
A. The likelihood increases substantially after age 40.
b
The likelihood decreases substantially after age 40.
C. Age has no effect.
d The likelihood increases at first, then decreases after age 20.
Answer:
A
Explanation:
Someone please please help me
Answer:
D
Explanation:
Select the energy sources that produce greenhouse gases in the process of creating electricity.
a
natural gas
B
wind
C
geothermal
D
biomass
E
coal
F
gasoline
I believe it's A, E, and F but I may be wrong
In a particular population the allele frequency of the ABO blood type alleles are as follows: r is 50%. IB is 49% and i is 1%. If mating is random and the population is in Hardy-Weinberg equilibrium, what percent of the population will have an A blood type.
A2%
B.25%
C.26%
D.30%
E.None of above
Answer:
26% is the percent of the population will have an A blood type (Option C)
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
natural selection is the process by which...
The photosphere and chromosphere are typically described by which of the following characteristics?
A. the way in which energy travels through them
B. their plasma composition
C. their visible colors, such as red or yellow
D. their extreme depths relative to other layers
Answer: I think the answer us C
Explanation:
im sorry if im wrong! but hope it helps! Have a good day! ^v^
The photosphere and chromosphere are typically described by their visible
colors, such as red or yellow.
Chromosphere and photosphere are both layers of the Sun. The
photosphere is the visible surface of the sun which is characterized by a
yellow color.
The chromosphere is regarded as the layer found above the visible layer of
the sun(photosphere). They are made up of hydrogen and helium nuclei
which when ionizes produces a red color especially during an eclipse.
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PLEASE HELP!! ILL GIVE 50 POINTS!!!!!
Answer: Here's a few
Explanation:
Belt
Glue
Bald
Bale
Tube
Band
Steel
Lane
Best
Darn
Answer:
bell
belt
steel
eels
begs
dabs
bags
slug
best
tear
bear
bean
beer
used
uses
Explanation:
This pedigree shows the inheritance Leber congenital amaurosis (LCA) which is a type of hereditary blindness. Individuals with this disease lose their vision during childhood. 3. What is the inheritance pattern shown?
About the question: You will find the pedigree in the attached files
Answer:
Autosomal recessive inheritance
Explanation:
Autosomal recessive inheritance characterizes by the expression of the recessive trait. Two copies of these alleles are needed to express the recessive phenotype and no dominant alleles.
Let us assume that the diallelic autosomal gene has a dominant allele L that expresses the normal phenotype and the recessive allele l that expresses the altered phenotype. The pedigree would be as shown in the attached files.
To interpret the pedigree, remember that
Squares represent malesCircles represent femalesEmpty figures express normal/healthy/not affected individualsSolid black figures represent affected individualsLeber congenital amaurosis (LCA) is a type of Autosomal recessive inheritance. Individual with this disease loses their vision during childhood.
What is Pedigree Analysis?The study of the inheritance of genetic traits in several generations of a human family in the form of a family tree diagram is called Pedigree analysis.
Two copies of these alleles are required to express the recessive phenotype and are responsible for the inheritance of LCA. As autosomal recessive inheritance expresses its trait when both the alleles of each parent are in recessive form and the resulted offspring shows the inheritance pattern.
Hence, LCA is an autosomal recessive inheritance caused by the expression of both recessive alleles simultaneously in an individual.
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Once transcription is complete, strands of RNA are sent to the cytoplasm to attach to
Answer: ribosome
Explanation:
rhe mRNA (messenger RNA) takes the transcribed RNA strand to ribosomes in the in the cytoplasm. Here, tRNA will attach to codons using anticodons. The tRNA will also bring amino acids that will make a polypeptide chain. This makes proteins.
Which process emits carbon dioxide naturally into the atmosphere during the carbon cycle?
A ) photosynthesis
B ) Gas combustion
C ) Cement production
D ) Cellular respiration
Answer:
B ) Gas combustion
step by step explanation:
Answer:
D ) Cellular respiration
Explanation:
I think naturally is the key word, so I think it's cellular respiration.
What is Fermentation ?
Answer:
Fermentation is an enzyme catalysed, metabolic process whereby organisms convert starch or sugar to alcohol or an acid anaerobically releasing energy. The science of fermentation is called “zymology”. Fermentation is an anaerobic biochemical process
Or
Fermentation, chemical process by which molecules such as glucose are broken down anaerobically. More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old.
Or
More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old. The frothing results from the evolution of carbon dioxide gas, though this was not recognized until the 17th century.
This is the Answer for your question :3
I hope you are having a great day ❤️❤️❤️❤️❤️❤️❤️❤️❤️
What is a lunar eclipse ( can someone write a paragraph pleasee) mark brainliest
A lunar eclipse occurs when the Moon moves into the Earth's shadow. This can occur only when the Sun, Earth, and Moon are exactly or very closely aligned with Earth between the other two, and only on the night of a full moon.
Please help 100 Points
Answer:
5: Algae
4: Aquatic insects
3: minnows
2: Trout
1: Herons
Sorry if its wrong
Hope I helped :]
Answer:
Answer:
5: Algae
4: Aquatic insects
3: minnows
2: Trout
1: Herons
Explanation:
What if a mutation occurred in the human insulin gene and the first triplet was changed to C C G? Is this a silent mutation?
Yes, this will be a silent mutation.
Explanation: The mutation which occurred in the human insulin gene where the first codon was changed to CCG will be a silent codon because this will not change the sequence of the amino acid and the amino acids formed will remain the same.