Answer:
Vitamin D
Rickets
Explanation:
Lack of vitamin D causes rickets
Darker skin in equatorial environments is adaptive because it prevents vitamin D deficiencies, which cause Rickets in newborns.
What determines skin color?The pigment melanin is by far the most important factor that determines the color of people's skin, although there are many other factors that play a role. People with darker skin have more melanin, which is the primary pigment responsible for their skin color. Melanocytes, which are cells found in the skin, produce melanin.
People who live closer to the equator typically have darker skin as a form of protection against the sun's ultraviolet (UV) rays. This is because excessive UV exposure can lower folic acid levels and lead to skin cancer.
Black people have more melanin in their skin than people with lighter skin, which affects the body's ability to synthesize vitamin D. People with lighter skin have less melanin in their skin.
Therefore, near equator more sunlight causes increased vitamin D production , preventing rickets in new born.
Learn more about melanin, here:
https://brainly.com/question/11119046
#SPJ2
Summarize what responsibilities scientist have and why:
difference between clarias gariepinus and hetrobranchus bidorsalis?
Answer:
The clarias gariepinus or african sharptooth catfish , belongs to the Clariidae family of airbreathing catfishes. They exist in freshwater lakes, rivers, and swamps, as well as man-made environments like oxidation ponds and even urban sewage systems, throughout Africa and the Middle East.
Hetrobranchus bidorsalist, he African catfish, sometimes known as the eel-like fatty fin catfish, is an airbreathing catfish found in Africa. It has a lot in common with the vundu catfish, which is well-known among anglers.
--------------------------------
[tex]\textbf{HOPE IT HELPS}[/tex]
[tex]\textbf{HAVE A GREAT DAY!!}[/tex]
Leaf is modified into thorn where water availability is low.....give reason?
Answer:
To help conserve water or prevent loss via transpiration from the leaves
Explanation:
Some plants are found growing in habitats with little or no moisture content as annual rainfall is very low. These plants are called xerophytic plants. However, despite the low water condition, these plants are adapted to the environment and still survive.
One of their adaptation (structural) is that their leaves are reduced to thorns. Ideally, plants tend to lose water via the stomata on the leaves in a process called TRANSPIRATION. Hence, the leaves of plants adapted to a xerophytic habitat is modified to thorns in order to prevent water loss from the leaves and conserve the water.
What is produced during the Krebs cycle?
A. carbon dioxide
B. glycogen
C. oxygen
Links and random responses will be reported
Answer:
A. carbon dioxide
Explanation:
For one cycle, two molecules of carbon, three molecules of NADH, one molecule of FADH2 and one molecule of ATP or GTP are produced.
Which chloroplast structure increases the amount of surface area that is available for photosynthesis
Answer:
Thylakoid
Explanation:
A thylakoid is a sheet-like membrane-bound structure that is the site of the light-dependent photosynthesis
PLS HELP 20 PTS
Write a supported hypothesis of how the body would react if the peripheral nervous system was shut down while the central nervous system continues to function.
Explanation:
The real magnitude of this challenge can perhaps be best judged by considering the structural and functional complexity of the human brain and the bewildering complexity of human behavior. The human brain is thought to be composed of about a hundred billion (1011) nerve cells and about 10 to 50 times that number of supporting elements or glial cells. Some nerve cells have relatively few connections with other neurons or with such effector organs as muscles or glands, but the great majority receive connections from thousands of other cells and may themselves connect with several hundred other neurons. This means that at a fairly conservative estimate the total number of functional connections (known as synapses) within the human brain is on the order of a hundred trillion (1014). But what is most important is that these connections are not random or indiscriminate:
They constitute the essential "wiring" of the nervous system on which the extraordinarily precise functioning of the brain depends. We owe to the great neuroanatomists of the last century, and especially to Ramón y Cajal, the brilliant insight that cells with basically similar properties are able to produce very different actions because they are connected to each other and to the sensory receptors and effector organs of the body in different ways. One major objective of modern neuroscience is therefore to unravel the patterns of connections within the nervous system—in a word, to map the brain.
can someone help me complete the unfinished DNA strands please?
Answer:
it is T G C A T
Explanation:
as in DNA adenine pairs with thymine and cytosine with guanine. You can also remember it as Apple Tree and Car Garage
how to get remove black tartar from teeth.please help thank you
Answer:
1. Brush regularly
2. Electronic or powdered toothbrushes may get rid of it
3. Rinse daily
4. Don't smoke
Explanation:
Hope this helps!
Which substance is not excreted by the body
Answer:
Saliva
Explanation:
In which type of synovial joint does one bone with a convex non-hemispherical surface fit into the concave depression of another
Name the type of classifications of tissue formed by combination of cell.
a) Red Blood Cell:
b) Muscle Cell:
c) Nerve Cell:
Answer:
its (a)
Explanation:
A tissue is a group of red blood cells of common origin which are structurally similar and perform a particular function. Organ is a group of tissues and organ system is a group of organs.Therefore, the correct answer is option A.hope it helps you.pls mark me as branliestThe plant coleus has three distinct leaf color phenotypes: green, white, and variegated (white and green mixed) the crosses are made as follows: female variegated leaves × male green leaves gives offspring with all variegated leaves female green leaves × male with white leaves gives offspring with all green leaves female with white leaves × male with variegated leaves gives offspring with all white leaves This is an example of ________.
Answer:
Cytoplasmic inheritance
Explanation:
female variegated leaves × male green leaves ⇒ all variegated leaves female green leaves × male with white leaves ⇒ all green leaves female with white leaves × male with variegated leaves ⇒ all white leavesFrom these crosses, we can notice that only the female´s phenotype is expressed in the progeny, independently of the male´s phenotype. Whenever this occurs, it is probably due to the action of cytoplasmic inheritance.
Extrachromosomal or cytoplasmic inheritance refers to hereditability transmission controlled by cytoplasmic genes.
This form of inheritance lays in genes that are out of the nucleus. Even though most of the DNI is located in the nucleus, information for some characters is placed in organelles in the cytoplasm, such as mitochondria and chloroplasts. These organelles have a well-defined portion of the total cellular genome.
When a female expresses a trait that is defined by genes in the organelles, the whole progeny expresses the same trait as the female.
Mitochondrial inheritance is mostly maternal, but recent studies have demonstrated that it might also be paternal.
The described experiment is an example of Cytoplasmic inheritance.
What do you mean by Phenotypes?Phenotypes may be defined as the appearance or manifestation of a character. Phenotypes are also known as traits.
Cytoplasmic inheritance reveals the phenotypes of offspring according to female parents. In this mode of inheritance, characters or traits are stored in the organelles like chloroplast, and mitochondria, as well as in the cytoplasm.
Therefore, the described experiment is an example of Cytoplasmic inheritance.
To learn more about Cytoplasmic inheritance, refer to the link:
https://brainly.com/question/9773481
what is carrageenan ?
Answer:
Carrageenan is an extract from a red seaweed commonly known as Irish Moss. This edible seaweed is native to the British Isles, where it's been used in traditional cooking for hundreds of years. It's also widely used in the food industry, mostly as a thickener and gelling agent.
what are evidence that the himalayas mountain are still rising
plz help me with a good explanation and I will give u branist and follow u and also give u like plz help me
Answer:
because duetothe volcanic activity and tectnic plates it risesup
What is a group of organisms that are able to interbreed and form viable offspring?
A.Species
B.Genus
C.Taxonomy
D.Similar organisms
Question in the photo
Answer:
C
Explanation:
From reading what the process is, I think the answer should be C. The definition always says that you get energy from a chemical reaction and the products are CO2 and water. That can only mean that you have a hydrocarbon burning.
Chemically it looks like
C6H12O6 + 6O2 ====> 6CO2 + 6H20
why is DNA a useful form of evidence for developing a phylogenetic tree?
a) DNA never changes
b) DNA is the newest thing in science
c) DNA is passed from generation to generation
Answer:
DNA is useful for a phylogenetic tree because DNA is passed from generation to generation.
the answer;
should be C
HAVE A NİCE DAY
Explanation:
greeetings from Turkey ツ
David Tilman's study of two diatom species, each with differing abilities to utilize different levels of multiple resources, showed that coexistence is only possible when both resource levels are high. coexistence is only possible when both resource levels are low. coexistence is not possible. coexistence is possible if each species is more efficient at using a different resource than the other species.
Answer:
coexistence is possible if each species is more efficient at using a different resource than the other species.
Explanation:
Competition is an ecological and evolutive process very common in nature. Competition might be intra- or interspecific. Competition between different species in a community or ecosystem might be due to the same resource use, or the same territory, shelter, etcetera. When a resource is useful for two or more species, and limited, they compete to gain it.
The principle of competitive exclusion states that different species with the same requirements sharing the niche can not coexist indefinitely based on the same limited resource. When two competing species coexist, this is because of niche partitioning or niche differentiation.
Differentiation of effective niche is closely related to character displacement.
Character displacement is the result of interspecific competition, in which two or more species that live in the same habitat manage to avoid competition by developing different traits. Morphological divergence, or any adaptative trait development, fixated genetically, is the product of niche segregation. Species tend to differentiate morphologically in the presence of strong competitors. Traits divergence favors coexistence in the same place.
In the exposed example, both species have different abilities to utilize different levels of multiple resources. If both species live in the same place, this ability is significant to avoid competition and competitive exclusion.
Genes for the oxygen-carrying proteins hemoglobin and myoglobin descend from a common ancestor but act in very distinct ways today. They are _____. Group of answer choices paralogous shared ancestral characters paraphyletic horizontally transferred
Answer: paralogous
Explanation:
Paralogous genes are a class of homologous genes which are due to the duplication of gene, then this are refered to as paralogous.
Genes for the oxygen-carrying proteins hemoglobin and myoglobin descend from a common ancestor but act in very distinct ways today. They are referred to as paralogous.
Select the correct answer from each drop-down menu. Study the pie chart, and then complete the passage. Causes of deforestation in the Amazon, 200-2005. The pie chart indicates that deforestation in the Amazon rainforest is ___(a result of industrial manufacturing. Mostly driven by food production. Unrelated to human activity). The loss of large carbon-storing trees combined with the presence of ___(oxygen. Methane. Sulfur)-producing cattle is likely to intensify the greenhouse gases in the Amazon.
Answer:
first box- A result of industrial manufacturing
second box- Methane
Explanation:
Im not for sure but this is what i believe it is if possible ill update
The pie chart indicates that deforestation in the Amazon rainforest is mostly driven by food production. The loss of large carbon-storing trees combined with the presence of methane-producing cattle is likely to intensify greenhouse gases in the Amazon.
What is deforestation in the Amazon rainforest?Deforestation in the Amazon rainforest has significant environmental consequences. Trees store large amounts of carbon dioxide, and their removal contributes to increased greenhouse gas emissions, which are a major cause of climate change. Additionally, the cattle that are raised on cleared land produce methane, which is another potent greenhouse gas. As more trees are cleared to make way for agriculture and cattle farming, the carbon storage capacity of the forest is reduced, and more methane is released into the atmosphere.
Hence, the pie chart indicates that deforestation in the Amazon rainforest is mostly driven by food production. The loss of large carbon-storing trees combined with the presence of methane-producing cattle is likely to intensify greenhouse gases in the Amazon.
Learn more about the deforestation of Amazon here.
https://brainly.com/question/24381327
#SPJ2
What statement best explains how the mass of an atom is organized?
Answer:,,,,,,,,,,,
Explanation
A young patient is short in stature, with his limbs and trunk in proportion. His mental development appears to be appropriate for his age. Determine and discuss the type of hormonal disorder he likely has.
Answer:
Dwarfism
Explanation:
Dwarfism is a growth disorder characterized by a height that is much lower than the average for people of the same race and age. Individuals with proportionate dwarfism have excessively short bodies but the dimensions of all their parts are proportionally smaller. It is due to certain diseases that are already present at birth or that manifest themselves during early childhood, and that block the normal development of their body, such as the deficiency or deficit of growth hormone is when there is not enough hormone growth released by the pituitary gland. Dwarfism does not directly lead to a deficiency in the intellectual capacities of the individual, in general their mental development is normal.
define the photosynthesis?
Answer:
PHOTOSYNTHESIS is a process in which green plants and other certain organisms convert water, carbon dioxide and other minerals into energy rich molecules and oxygen using the light energy.
hope it helps
have a nice day
Answer:
Photosynthesis is a process through which plants and other organisms transform light energy into chemical energy, which is then released to power the organism's activities through cellular respiration.
somebody help. . ways of propagation of plant materials for planting.
Answer:
These seven methods include: seed propagation, cutting, layering, division, grafting, budding, and tissue culture technique.
Explanation:
The major methods of asexual propagation are cuttings, layering, division, budding and grafting. Cuttings involve rooting a severed piece of the parent plant; layering involves rooting a part of the parent and then severing it; and budding and grafting is joining two plant parts from different varieties.
What information can a scientist learn directly from a single fossil?
A. How many offspring the organism produced
B. How the organism is related to others
ООО
C. The organism's shape and size
D. The life expectancy of similar organisms
SUBMIT
Answer:
B. How the organism is related to others
Answer:
B. How the organism is related to others
Explanation:
The following table describes some landforms.
Landform
Created By
Found in
Wind erosion Water or glacial erosion Depositions Deserts Coasts Mountains
Yes
No
Yes
Yes
No
No
| A
Yes
No
B
Yes
Yes
Yes
No
No
Yes
с
No
No
No
Yes
No
No
D
No
No
No
No
Which landform is most likely a coastline?
Landform A
Landform B
O Landform C
Landform D
Answer:
landform D is most likely a cost line
what came first the chicken or the egg?
Answer:
So the egg definitely came first.
Explanation:
Dinosaurs laid eggs, the fish that first crawled out of the sea laid eggs, and the weird articulated monsters that swam in the warm shallow seas of the Cambrian Period 500 million years ago also laid eggs. They weren't chicken's eggs, but they were still eggs.
characteristics of carbohydrates
Answer:
they are quickly used by the body, and are typically quick source of energy. They can be found in almost all sort of food. The composition of Carbohydrates are consisted of Carbon, Hydrogen, and Oxygen.
Which of the following is not one of planes and sections of body orientation?
Answer:
They are the median plane, sagittal planes, coronal (frontal) planes and horizontal (transverse) planes
3. What is the relationship of the sea and land breeze to the temperature of an area?
please ung matinong answer po need ko po kase
Answer:
Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean.
Explanation:
HOPE IT HELPS (≧▽≦)
