Answer:
D
Explanation:
Population density is the number of individuals in a unit square area. As if population density increases in a population that is density-dependent, will increase immigration, i.e., option D.
What is immigration?Immigration is a process by which individuals become residents of another country permanently.
The process of immigration is of great importance for social, economic, and culture of states.
As population density increases in a population that is density-dependent immigration will also increase.
Thus, the correct option is D.
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what is myogenic heart? give one example
Answer:
The myogenic heart is the characteristics of vertebrates where continuous rhythmic contraction occurs. The myogenic heart is the intrinsic property of the cardiac muscles. Each contraction of the heart muscle regulates the flow of blood in the form of a pulse or heart rate.
Explanation:
i hope its helps
i need help please????
Answer:
a
Explanation:
the maria have few craters compared to the surrounding areas because ______
Answer:
Due to absence of erosive agents.
Explanation:
The Maria have few craters compared to the surrounding areas because of no erosive agents such as winds and rain. The erosive agents only formed when there is atmosphere in the region. The atmosphere is responsible for the presence of winds and rainfall. If these erosive agents are present, there will be more craters as compared to the region where no erosive agents are present so that's why Maria have few craters in the region. as compared to the surrounding region.
Chromosomes are SMALLER than genes and are found in DNA.
True
False
Answer:True
Explanation:
Help plz asap asap plz
Answer:cholem im pretty surw
Explanation:
What consists of all the living organisms in an area and the
non-living aspects of the environment?
a Ecosystem
b Community
C Population
Answer:
a. Ecosystem
Explanation:
Ecosystem
An ecosystem consists of all the living things and nonliving things interacting in the same area.
Calculate the ratio of the size of the bacterial cell to the size of the mesophyll cell
bacterial cell is 1 micrometer
mesophyll cell is 0.05mm
Answer:20 to 1
Explanation:
]
The ratio of the size of the bacterial cell to the size of the mesophyll cell is 1:20. It means that 20 bacterial cells can fits into a mesophyll cell.
Given here,
Size of the bacterial cell = 1 micrometer
Size of the mesophyll cel= 0.05mm
Equalize the measuring unit,
1 micrometer = [tex]\bold{10^-^6 m}[/tex]
1 millimetre = [tex]\bold { 10^-^3 m}[/tex]
So the ratio will be
[tex]\bold { = \dfrac{ 1 x10^-^6 m}{0.05 x 10^-^3 m} }\\\\\bold { = \dfrac 1{20} }[/tex]
Therefore, the ratio of the size of the bacterial cell to the size of the mesophyll cell is 1:20.
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Water is often called the “universal solvent” becuase many substances can be dissolved in water. What property of water allows it to be such a versatile solvent?
expansion upon freezing
polarity and cohesion
purity
high heat capacity
Answer:
polarity and cohesion
Explanation:
All living things are made up of building blocks known as ______.
A. organs
B. bricks
C. cells
Answer:
cells.
Explanation
Having trouble with this textbook question. Can anyone help me out?
"You learned that the length of the cell cycle varies between cell types. Predict which of the three phases of the cell cycle varies"
Answer:
Oh well Thx that could really help
5. Name one crustacean that lives in the ocean, one that lives in freshwater, and one that lives on land.
Answer:
Pillbugs or woodlice live on land
Crabs or lobsters live in Ocean
Explanation:
Decapods live in oceans(crayfish, lobsters,crabs)
isopods live on land (pillbugs,woodlice)
Which of the following mechanisms is the correct sequence of events that takes place during the plant responses to internal and external signals?
A) transduction, reception, and response
B) reception and transduction
C) reception, transduction, and response
D) reception and response
Answer:
C) reception, transduction, and response
Explanation:
Plant signaling means that information is conveyed from receptor systems to effectors within and between plant cells.
Signals can be of chemical form or electrical form.
Plant responses to internal and external signals take place in the following sequence:
Reception
Transduction
Response
So, option C) is correct
Resuelve el problema relacionado con las etapas del ciclo menstrual: "Si el día fértil de la polola de Luciano es el 09 de noviembre y ella tiene un ciclo de 28 días ¿ Cómo puede calcular el primer día de menstruación de su polola en ese mes y el período fértil? En la respuesta debes registrar: Primer día de menstruación, Día de ovulación y período fértil.
Answer: El primer día de la menstruación comenzaría el 26 de octubre y el período fértil es desde el 6 de noviembre hasta el día 9 (fecha de ovulación)
Explanation:
El ciclo menstrual está compuesto por cuatro fases: menstruación, fase folicular, ovulación y fase lútea.
Menstruación: Eliminación del revestimiento engrosado del útero (endometrio) del cuerpo a través de la vagina. El flujo menstrual contiene sangre, células del revestimiento del útero (células endometriales) y moco. La duración media de un periodo es de entre tres días y una semana.Fase folicular: Comienza con la menstruación y termina con la ovulación. La glándula pituitaria libera la hormona estimulante del folículo (FSH), estimulada por parte del hipotálamo. Esta hormona estimula al ovario para que produzca entre cinco y 20 folículos (nódulos o quistes diminutos), que se acumulan en la superficie. Durante la fase folicular, el folículo en desarrollo provoca un aumento del nivel de estrógenos. El hipotálamo, en el cerebro, reconoce este aumento y libera una sustancia química llamada hormona liberadora de gonadotrofina (GnRH). Esta hormona hace que la hipófisis produzca niveles elevados de hormona luteinizante (LH) y FSH. En el plazo de dos días, los altos niveles de LH desencadenan la ovulación. Ovulación: El óvulo es conducido hacia la trompa de Falopio y hacia el útero por medio de ondas de pequeñas proyecciones similares a pelos. La vida del óvulo típico es de sólo unas 24 horas. A menos que se encuentre con un espermatozoide durante este tiempo, morirá. Entonces, la ovulación consiste en la liberación de un óvulo maduro desde la superficie del ovario. Suele producirse en la mitad del ciclo, unas dos semanas antes de que comience la menstruación.Fase lútea: Durante la ovulación, el óvulo se desprende de su folículo, pero el folículo roto permanece en la superficie del ovario. Durante las dos semanas siguientes, aproximadamente, el folículo se transforma en una estructura conocida como cuerpo lúteo. Esta estructura secreta progesterona y estrógeno. Esta combinación de hormonas mantiene el revestimiento del útero engrosado, a la espera de que se adhiera un óvulo fecundado (implante). Si el óvulo fecundado se implanta en el revestimiento del útero, éste produce las hormonas necesarias para mantener el cuerpo lúteo. Esto incluye la gonadotrofina coriónica humana (HCG), la hormona que se detecta en un análisis de orina para detectar un embarazo. El cuerpo lúteo sigue produciendo los niveles elevados de progesterona necesarios para mantener el grosor del revestimiento del útero. Si no se produce el embarazo, el cuerpo lúteo se marchita y muere, normalmente alrededor del día 22 de un ciclo de 28 días. El descenso de los niveles de progesterona hace que el revestimiento del útero se desprenda (menstruación)La duración media del ciclo menstrual es de 28-29 días, pero puede variar entre las mujeres y de un ciclo a otro. La duración del ciclo menstrual se calcula desde el primer día de la menstruación hasta el día anterior al inicio de la siguiente.
Si consideramos que el primer día fértil es el 9 de noviembre y el ciclo es de 28 días, el primer día de la menstruación comenzaría el 26 de octubre y el período fértil es desde el 6 de noviembre hasta el día 9 (fecha de ovulación) Esto es porque la menstruación ocurre aproximadamente 14 días luego de la ovulación si el ciclo es de 28 días. Los días más fértiles son aproximadamente desde 3 días antes de la ovulación. Aunque en algunos casos, la fertilidad puede durar hasta dos días después de la ovulación.
write one function of uric acid
Antioxidant
Explanation:
Most serum uric acid is freely filtered in kidney glomeruli, and approximately 90% of filtered uric acid is reabsorbed, implying that it has a considerable physiological role [2], [5]. In humans, over half the antioxidant capacity of blood plasma comes from uric acid [5], [6]. Uric acid is a strong reactive oxygen species (ROS) and peroxynitrite scavenger and antioxidant [5], [6], [7], [8]. High levels of uric acid are readily detected in the cytosol of normal human and mammalian cells, especially in the liver [9], vascular endothelial cells, and in human nasal secretions, where it serves as an antioxidant
Answer:
It forms ions and salts known as urates and acid urates, such as ammonium acid urate.
Explanation:
Please help it is due at 12
The maintenance of a self-sustaining ecosystem requires a
A.soil that is acidic
B.constant temperature
C.greater numberof herbivores than producers
D.cycling of materials between organisms and their environment
How does the presence of cosmic microwave background radiation support the big bang theory?
Check all that are true.
-It shows that here is a faint, leftover energy that is coming from all directions of the universe.
-It shows that the universe used to be smaller with a uniform temperature.
-It shows that the universe is coming back together and will collapse in a massive black hole.
-It shows that all matter and energy in the universe is accelerating.
Answer:
I'm pretty sure that it's B
It shows that the universe used to be smaller with a uniform temperature. Therefore, option (B) is correct.
What is cosmic microwave background radiation?According to the theory of the Big Bang, the cosmic microwave background is an electromagnetic radiation that is a relic from an earlier stage in the development of the universe. This radiation is also known as "relic radiation." The Cosmic Microwave Background (CMB) is the weak radiation that permeates all of space.
One of the primary confirmations of the Big Bang is thought to be its discovery and thorough studies of its attributes. The cosmic background radiation was accidentally discovered in 1965, which shows that the early cosmos was dominated by a radiation field with extraordinarily high temperatures and pressure.
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what is an amino acid
Data
Record the glucose meter reading in the table below for each of the trials.
Please note that blood glucose levels will vary from person to person, and the levels given here are examples only. The levels given for the person with type 1 diabetes are assuming that no extra insulin was injected to account for the carbohydrate intake.
Subject A (without diabetes)
Food type
Starting blood glucose level (mg/dL)
Blood glucose level after 1 hour (mg/dL)
Blood glucose level after 2 hours (mg/dL)
Blood glucose level after 3 hours (mg/dL)
100
100
100
100
Subject B (with type 1 diabetes)
Food type
Starting blood glucose level (mg/dL)
Blood glucose level after 1 hour (mg/dL)
Blood glucose level after 2 hours (mg/dL)
Blood glucose level after 3 hours (mg/dL)
100
100
100
100
Answer:
The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the South.
Explanation:
Subject A = The blood glucose level will decrease after 3 hours
Subject B = The blood glucose level will stay the same after 3 hours
I'm not sure about the rest...
What is the ideal location for a radioactive waste storage facility?
A. in an area with a lot of people
B. far away from ground water
C. in an area that has a lot of earthquakes
D. in an area that already has a lot of background radiation
Answer:
B
Explanation:
It is really bad if the radio active waste spilled and got in the water or get on people. Putting it where other backround radiations are will worsen the area and may affect the waste. the earthquake area would put the facility indanger of coming down and spilling the waste all around it.
Example of multicellular organisms. Please help me
Answer:
human beings, plants, animals, birds, and insects.
Explanation:
Please mark brainiest TYSM
Which of the following is a chemical defense of plants?
A.) Macrophages
B.) Helper T cells
C.) Thorns
D.) Toxins that kill the predator.
Systematists use several fundamental criteria to assign animals to phyla. Check all of the criteria that systematists would use to classify animals under specific phyla. Check All That Apply Feeding behaviorFeeding behavior Adult body symmetryAdult body symmetry Ultimate adult body sizeUltimate adult body size The embryological formation of body cavitiesThe embryological formation of body cavities Biogeographic distributionBiogeographic distribution Gene sequencesGene sequences The number of tissue layersThe number of tissue layers
Answer:
The correct answer is -
Adult body symmetry
The embryological formation of body cavities
Gene sequences
The number of tissue layers
Explanation:
Scientists and taxonomists use different criteria to assign different animals to particular phyla. The various systematic criteria that are used more frequently by systematists are as follows:
1. Adult body symmetry
Body symmetry is one of the criteria used to assign an organism or animal to a particular phylum. There is two symmetry found in animals radial and bilateral. If any plane passes through the middle axis and divides into two identical segments called radial symmetry and Bilateral symmetry is where only a single plane divides the body into halves. However, there are many animals that do not have any symmetry and called assymetrical.
2. The embryological formation of body cavities
Other than layers body cavities also helps in assigning the animals that depend on coelom - body cavity between the body wall and gut wall
Animals could be - coelomate(coelom present), pseudocoelomate -(not lined with mesoderm) and acoelomate(coelom absent).
Gene sequences
Genetic similarities also consider and how close an organism to their organism of the phylum or species.
The number of tissue layers
Different body parts, tissues, muscles, and organs developed from the different cell layers that are formed during embryo, therefore, called embryonic layers.
Animals on the basis of these embryonic layers could be diploblastic or triploblastic. Diploblastic animals form 2 embryonic layers the outer and inner layers called the ectoderm and the endoderm respectively. Triploblastic animals have an extra middle layer known mesoderm.
Surprisingly, whales have hind limbs (leg bones) that they do not use, but that are thought to be left over from an earlier ancestor of theirs. This is an example of which type of structures?
Answer:
Vestigial organs
Explanation:
Vestigial organs/ structures are those parts of the body that have become redundant, weakened, or useless to the body as a result of prolonged inactiveness.
According to Charles Darwin's theory of evolution, he explains that parts of the body that are not used quite often do not develop any further, and as generations of offspring come and go, such parts become useless to the organism. This is the law of use/misuse of parts.
This is what happened to the whales. Over the years, the whales must have discovered that the legs were useless to them as they spent most of their time in the water. This led to the degeneration of such body part over thousands of generations, leaving them with just a faint trace of the hind limbs which were observed
Do any varieties of cyanobacteria living today produce stromatolites?
A: Yes
B: No
Answer: yes
Explanation:
Stromatolites, also known as layered rocks, form in shallow waters when biofilms of living microorganisms, like cyanobacteria, trap sediment. Most stromatolites grow in extremely salty lagoons or bays, in places like Australia, Brazil, Mexico and the Bahamas.May 30, 2013
3. What part of the brain is highlighted in the diagram below? (4 points)
Frontal lobe
Occipital lobe
Temporal lobe
Parietal lobe
Answer:
Occipital lobe•^•Explanation:
The occipital lobe is the smallest of the four lobes of the cerebral hemisphere. It is present posterior to the parietal and temporal lobes. Thus, it forms the caudal part of the brain. ... The occipital lobe is primarily responsible for visual processing. It contains the primary and association visual cortex.The part of the brain that is highlighted in the image is the Occipital lobe.
What is the brain?The brain is the part of the body that controls and coordinates the activities of all other organs in the body. The brain is made of different parts that play different roles.
The part of the brain that is highlighted in the image is the Occipital lobe.
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pls help
a. 5
b. 4
c. 6
d. 3
e. 1
Answer:
c
Explanation:
Why are viruses not considered living organisms by most people?
Answer:
Viruses are not considered living organisms because they require a host cell to replicate, unlike living organisms which can replicate on their own.
ANSWER FAST ILL GIVE BRAINLIEST!!!
What does it mean for a species to be in stasis?
The gene pool of the species is changing rapidly.
The species is not changing much.
The species is only found as fossils.
The species is in geographic isolation.
Answer:
the species is not changing much
Explanation:
another way you can think of this is homeostasis and that is a period of inactivity
A Punnett square is a type of model. Which type of model does this Punnett square represent?
a)conceptual
b)functional
c)mathematical
d)physical
Answer:
c
Explanation:
it uses percentages, like 50% Aa, 25% aa and 25% AA