How do you think humans contribute to the rock cycle?
9. If the Earth and the Moon were on the same orbital plane, how often would a lunar eclipse
occur?
A. Once a month at the First Quarter phase.
B. Once a month at the full Moon phase.
C. Once a month at the New Moon phase.
D. Once a month at the Third Quarter phase.
Answer:
.B
Explanation:
once at the full moon phase
How do vaccines help your body fight disease? Choose ALL the correct answers from the options below.
Question 1 options:
Memory B cells remember the pathogen and can produce more antibodies quickly.
A small amount of weakened or killed pathogen is injected or ingested to cause your body to produce antibodies to the disease.
Antibodies tag invading disease cells for destruction.
Chemical compounds that kill the disease are injected or ingested.
Explanation:
vaccines have antigens of particular disease causing pathogen which are injected in our body and our body produces antibodies against them.by antigen antibody reaction they destroy the antigen which are cause of diseases and antigen are stored in memory T cells and macrophages.
Currently, China's greenhouse gases account for 26% of the world's emissions. Can you create a carbon-neutral community in a densely populated region?
Answer: Yes, it is possible to create a carbon-neutral community in a densely populated region.
Explanation:
The greenhouse gases are the gases that causes global warming and greenhouse effects. Global warming is a scientific theory in which increased levels of atmospheric carbon dioxide and other greenhouse gases are linked to general rising of temperature around the world. The unabsorbed carbondioxide rises to the upper atmosphere and blocks the radiation of solar energy back into the space. This precipitates a global temperature increase called 'greenhouse effect'.
The different greenhouse gases includes:
--> carbon dioxide
--> carbon monoxide
--> Nitrogen Oxides
--> Methane gases
--> Lead and
--> Chlorofluorocarbons.
According to recent research conducted, China's greenhouse gases account for 26% of the world's emissions. This is because China is densely populated with an increased demand on natural resources( fossil fuels) which gives off these greenhouse gases that's harms the environment. A carbon neutral community can be achieved is such densely populated areas through the following methods:
--> cutting current use of Fossil fuels.
--> placing heavy axes on gasoline and emission on each unit of fossil burned to reduce emission of carbon dioxide and other air pollutants.
--> reduction in the use of coal which emits 60% more carbondioxide per unit of energy produced than any other fossil.
--> shifting to perpetual and renewable energy resources that do not emit carbondioxide over the next 20 - 30 years.
--> Putting the population growth under a check
--> Planting of tress.
--> Educating people on harmful effects of global warming.
How did the development of the sexual reproduction affect evolutionary change?
HELPPPPPPPPPPPP PLSSSSSSSSS
Answer:
d
Explanation:
For a typical human aorta, the diameter of the lumen is 30 mm and the thickness of the wall is 4 mm. Assuming a blood density of 1.06 gm/cc and a viscosity of 0.035 Poise, calculate the Womersley number if the heart rate is 70 bpm. Diameters for the carotid and femoral arteries of a typical human are about 0.8 cm and 0.5 cm, respectively. Compute the Womersley numbers for each of the arterial segments for the same heart rate and explain if the flows can be assumed steady or not.
Answer:
Womersley numbers : 22.25 , 5.96 , 3.72
Explanation:
Calculate the Womersley number if the heart rate = 70 bpm
For the Human Aorta
∝ = r [tex]\sqrt{\frac{wp}{u} }[/tex] ------ ( 1 )
r = radius = 15 mm = 0.015 m
w = 2πf = 2 * π * 70 = 439.82
p = density of blood = 1060 kg/m^3
u = 0.035 P = 3.5 cp = 3.5 * 10^-3 Ns/m^2
Back to equation ( 1 )
∝ = 0.015 * [tex]\sqrt{\frac{439.82*1060}{60*3.5*10^{-3} } }[/tex] = ( 0.015 * √466209.2 / 0.21 ) = 22.35
For Carotid artery
r = 0.8 cm / 2 = 0.4 cm = 0.004 m
w = 2πf = 439.82
Womersley number = ( 0.004 * √466209.2 / 0.21 )
= 0.004 * 1489.981 = 5.96
For Femoral artery
r = 0.5 cm / 2 = 0.25 cm = 0.0025 m
Womersley number = 0.0025 * √466209.2 / 0.21 )
= 0.0025 * 1489.981 = 3.72
The flow is unsteady because of the varying Womersley numbers
What is the answer to number 1
Answer:hi
Explanation:hi
Answer:
TTT GCC AGT
Explanation:
what is angiosperm in plant
Answer: a plant that has flowers and produces seeds enclosed within a carpel. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees.
Explanation:
Help me match the words at the bottom with they definition
Answer:
The definitions in the attachment is numbered accordingly as follows:
1. Electrophoresis
2. Polymerase Chain reaction
3. DNA probe
4. Chromosome
5. Restriction enzyme
Explanation:
1. Gel electrophoresis is a biological technique used to separate DNA fragments according to their size and charge using electric current passed through a gel matrix containing the samples.
2. Polymerase chain reaction, commonly known as PCR, is a molecular technique developed by Kary Mullis. It is used to make million copies i.e. amplify of a specific segment of DNA from a very small amount of DNA.
3. DNA probe
The number of electrons in atoms determine an elements ? properties
Answer: The number of protons in one atom of an element determines the atom's identity, and the number of electrons determines its electrical charge.
Explanation:
Which options are examples of innovations that increased the carrying capacity of Earth for people? THANKS!
Choose all that apply:
Advances in heating and cooling.
Having fewer children per family on average.
Advanced agricultural methods.
Medical advances.
Answer:
having fewerchildrens per family on avg
Which of the following is a model that
shows the amount of energy available as it
flows through an ecosystem?
A) niche
B) energy pyramid
C) carrying capacity
D) food chain
Answer:
b
Explanation:
energy pyramids show how the energy passes through the ecosystem
crabtree effect on glycolysis
Answer: 'At high fructose concentrations, respiration is inhibited while glycolytic end products accumulate, a phenomenon known as the Crabtree effect. It is commonly believed that this effect is restricted to microbial and tumour cells with uniquely high glycolytic capacities (Sussman et al, 1980).
Explanation: Sorry I dont really know a lot
In which of the following situations do you think current will flow
please help me answer this question
Answer:
Source of current, force and pathway.
Explanation:
Source of current, force and pathway are the three important things needed or responsible for the current flow. A supply of electric charges (electrons) which is provided by the electric source, force of push to move the charges through the circuit and a pathway on which current flows. Without these three things, flow of current is impossible. so we can say that the situation in which all these three things are present will allow the current to flow in the circuit.
What does this model most likely represent?
Answer:
a model is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly
Which of the following elements is/are represented in the spectrum below?
A. Hydrogen only
B. Helium only
C. Hydrogen and helium
D. Calcium only
Answer:
The answer is
(D). Calcium only
Answer:
option d is the correct one
If two organisms have similar traits of DNA they probably
Answer:
4th Option, share a common ancestor.
Explanation:
If two organisms have similar traits of DNA they probably share a common ancestor is the most suitable option to fill the blank.
When the two organisms have similar traits of DNA they probably share a common ancestor.
Two organism have the same traits:When the genes are shared so it preserved the ancestor record where they share with each other and excludes the bacteria.
And, if the DNA is the same for two organism so they would share the a common ancestor.
hence, the last option is correct.
learn more about DNA here: https://brainly.com/question/20719741
Realice una línea de tiempo en orden cronológico de los siguientes Científicos que
estudiaron y aportaron sobre el origen de la vida:
● Aristóteles
● Jan Baptiste Van Helmont
● Francisco Redi
● Lazzaro Spallanzani
● John Needham
● Louis Pasteur
Utilice cualquier herramienta digital que le sea útil para completar su proyecto.
Cada científico debe tener detallado:
● Principal investigación referente al origen de la vida.
● Pensamiento sobre el origen de la vida.
● Descripción de la época en la que vivía.
● Opinión individual sobre el pensamiento que tiene el científico.
Answer:
Explanation:https://www.pinterest.com.mx/pin/835065955894197434/
what are the disadvantages of using models such as diagrams study the rock cycle?
Answer:
It doesn't exactly cover everything
Explanation:
brainliest?
Analise as alternativas abaixo e assinale a INCORRETA sobre o sistema nervoso. *
Um neurônio motor atua nos músculos, recebendo estímulos.
Os receptores sensoriais percebem estímulos.
Na resposta involuntária, o estímulo recebido não é processado no cérebro.
Neurônios associativos conectam neurônios sensitivos aos neurônios motores.
Os nervos conectam o cérebro ao corpo.
Answer:
Na resposta involuntária, o estímulo recebido não é processado no cérebro. It's correct ✔
Scientists have determined that Earth's interior has layers with different properties. One property is that the inner core is solid. Which of the following statements can be used as evidence to support this property?
Answer:
Earth's inner core is the innermost geologic layer of the planet Earth. It is primarily a solid ball with a radius of about 1,220 km (760 mi), which is about 20% of Earth's radius or 70% of the Moon's radius.[1][2]

The internal structure of Earth
There are no samples of Earth's core accessible for direct measurement, as there are for Earth's mantle. Information about Earth's core mostly comes from analysis of seismic waves and Earth's magnetic field.[3] The inner core is believed to be composed of an iron–nickel alloy with some other elements. The temperature at the inner core's surface is estimated to be approximately 5,700 K (5,430 °C; 9,800 °F), which is about the temperature at the surface of the Sun.[4]
why do you think that squirrel is better suited for the environment? Explain your reasoning
compare and contrast how the proportion "better" and "inferior" trait changes over time in a environment.
please explain
Answer:
i think better and inferior trait changes of the years we live on this earth
Explanation:
because lots of people try to study about eveything so they can write things about it
Shall I never be scared of anyone
My grandad keeps telling me to be brave and be scared of no one
Answer:
be scared but don't. act tough.
Help pwease kinda stuck lol.
Using what you know about natural selection, explain why there are more brown butterflies than yellow ones.
What is duplication event ?
Answer:
Duplications arise from an event termed unequal crossing-over that occurs during meiosis between misaligned homologous chromosomes. The chance of it happening is a function of the degree of sharing of repetitive elements between two chromosomes.
Explanation:
This is what I found I'm not sure
Soil erosion is a huge problem affecting human sustainability because soil is so crucial in
growing food. True or false ?
Healthy top soil is needed to grow crops, which in turn some of it becomes food. Erosion is the process in which top soil is carried away by the wind or rain water (depositing it into nearby lakes or streams). Without this top soil, farming becomes more difficult and crop yields likely decrease. In some cases, no crops can be grown at all. An extreme example of soil erosion, specifically wind-driven soil erosion, is the 1930s dust bowl during the Great Depression. This occurred due to over-farming and it led to massive dust storms. In turn, it caused many farmers to leave the area.
Prisms produce the colors of the rainbow through?
A. Reflection.
B. Refraction.
C. Scattering.
D. Absorption.
Answer:
It should be B
Explanation:
I hope this helps
What is true of all body cells except sex cells?
While each cell type in the body contains the same kinds of genes, they are organized on a different number of chromosomes depending on the cell type.
Each body cell contains the same number and kinds of chromosomes for that organism. In humans, the same 46 chromosomes are in every body cell.
Each body cell type carries a different number of chromosomes that code for that type of cell.
While each cell in the body contains the same number of chromosomes, each cell type has a different number of genes along those chromosomes.
Answer:
While each cell in the body contains the same number of chromosomes, each cell type has a different number of genes along those chromosomes.