Answer:
Birth is an example of a normally occurring positive-feedback mechanism.
Answer:
D. Labor in childbirth
I think i have seen this question before and that is what i remember.
Hope this answers your question!
I need to know everything about reproduction and variation for a test. YEAR 9
Studying the differences between fossils and modern organisms help scientists better understand the
any four application solar energy
Answer:
The solar energy is used in residential homes for heating the water with the help of solar heater.
Explanation:
Spiders use their silk to build strong webs, to trap bugs, to save themselves from falling, to wrap their eggs safely, and even to glide through the air. How can one material—spider silk—be used for so many different ___________?
Answer:
The missing word is things.
However, the real question is how one material can serve so many purposes? That is what makes it possible for the spiders web to have a high "utility" value?
The answer is in how the spiders make the silk.
Explanation:
So it interesting to note that spiders do not make only one kind of silk. They vary depending on what purpose it's doing serve.
The most common type is Dragline Silk.
Dragline Silk: This contains spidroins. Spidroins fall under a category of a protein called scleroproteins. Because of its composition, a strand or fiber of Dragline has the same tensile strength as steel albeit more flexible. That is if one produced steel the diameter of a spider's silk, and compared both for strength, the silk will be stronger.
The spider produces Dragline silk in its silk glands where they are as viscous as a paste. From here is pulled out or extruded into lines of silk.
Other types of spider silk are:
Capture-spiral silk. Also known as the Flagelliform, they are used for securing lines of the web. They are adhesive, very elastic, and possess high tensile strength. Tubiliform silk: They are also called Cylindriform. Its main use is for the protection of spider eggs. It is used to make a sac for which protects eggs. This type of silk is the toughest. Aciniform silk: For preserving fresh prey. Minor-ampullate silk: This type is used by spiders for creating temporary support while they are spinning a web. Etc.Cheers
What proportion of people who are infected with polio develop neurological problems?
Answer:
...
Explanation:
Which statement correctly identifies structures 1 and 2
in the diagram?
A. Structure 1 is an unstable atom that turns into
structure 2, a new atom.
B. Structure 1 is a stable element that breaks down into structure 2, an unstable element.
C. Structure 1 is a radioactive element that loses particles to create structure 2, released energy.
D. Structure 1 is a radioactive atom that decays into
structure 2, half of the original unstable element.
Answer:
A
Explanation:
Took the test :)
Answer: a.
Explanation:
what is light please tell me
light is a form of energy which gives us the sensation of vision.
hope
this
helps
Answer:
light is light i think or its probably chicken
Explanation:
When an organism excretes waste, can a plant directly use it as fertilizer (nitrogen source)? Why or why not?
Because the organism waste contains UREA and urea is rich in nitrogen and it can be used as fertilizer for plants. Bc plants need nitrogen.
When a life form excretes waste, plants can use it directly as fertilizer. As a result, it's correct.
What is a fertilizer?A fertilizer is any natural or synthetic material that is applied to soil or plant tissues to provide plant nutrients.
Fertilizers can be distinguished from liming materials or other non-nutritional soil amendments. There are numerous fertilizer sources, both natural and man-made.
It should be noted that nitrogen is a critical macronutrient required by many organisms, including plants. It is critical to their development.
Waste from organisms is permitted on plants, and this is necessary for their growth. As a result, when an organism excretes waste, the nitrogen content of the waste can be found in the waste and used as fertilizer for the plant.
Thus, the given statement is true.
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PLZ ANSWER!!! I NEED HELP LIKE ASAP!!!
Answer:
I believe the answer is B
Explanation:
this is the breed of rY and ry
Answer:
Wrinkled Yellow
rr = wrinkled
Yy = yellow
good luck, hope this helps :)
Answer: wrinkled yellow
Explanation:
The genotype for wrinkled is rr so it can only be shown when both alleles are recessive. Yellow is a dominant trait so it’s alleles would have to be Y_. The genotype of item four is rrYy, which is wrinkled and yellow
create a venn diagram to compare and contrast mitosis and meiosis. A picture would do or drawing.
You have that diagram on internet but here you go
The stage of the cell cycle when DNA replication occurs is _______________.
a
prophase
b
interphase
c
telophase
d
anaphase
Answer:
b.Interphase
Explanation:
The DNA replication of a cell takes place during the S phase or the Interphase.
Answer:
correct answer: b
Explanation:
When will an atom give up electrons?
When more than half of the outer energy level is filled
When the n=2 level is full
When less than half of the outer energy level is filled
When the outer energy level is full
Atoms give up electrons when less than half of the outer energy level is filled, forming positively charged ions. Noble gases with a full outer shell do not easily give up or accept electrons.
An atom will give up electrons when less than half of the outer energy level is filled. In chemistry, valence electrons are electrons in the outermost shell or energy level of an atom. Atoms tend to gain or lose electrons when the valence electron shells are not filled. When atoms lose their valence electrons, they become positively charged ions. An ion is a positively or negatively charged atom or group of atoms. For instance, sodium atoms give away one electron to form sodium ions with a positive charge because the outermost shell of sodium has only one electron, which is less than half the number needed to fill the shell entirely. When more than half of the outer energy level is filled, atoms are reluctant to give up their valence electrons, which is why noble gases do not form chemical bonds easily. When the outermost shell of an atom is full, it is stable, which is why noble gases do not give up or accept electrons quickly. Therefore, an atom will give up electrons when less than half of the outer energy level is filled.For more questions on electrons
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Why are sunspots dark?
A) They are cooler than the surrounding gases.
B) They are areas of solid material on the sun.
C) They are warmer than the surrounding gases.
D) They are old spots on the sun.
Answer:
A) They are cooler than the surrounding gases.
Explanation:
Sunspots are dark, planet-sized regions that appear on the "surface" of the Sun. Sunspots are "dark" because they are cooler than their surroundings.
Sunspots are dark because they are cooler than the surrounding gases. So, the correct option is A.
What do you mean by Sunspots?Sunspots may be defined as patches that are present on the surface of the sun that are visible and dark in color with help of a telescope.
These sunspots are dark, spherical, and some planet-sized in structure. These structures appear dark because the temperature of this region is slightly lower than as compared to its surroundings.
Therefore, sunspots are dark because they are cooler than the surrounding gases. So, the correct option is A.
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A city has experienced an increase in vehicle traffic in the last few years. During this time, the city has also recorded an increase in air pollution.
Which solution should the city choose to best reduce air pollution in the coming years?
A.
Monitor the levels of air pollution during rush hour each day.
B.
Provide more public facilities for the disposal of motor oil used in vehicles.
C.
Encourage using public transportation rather than driving individual cars.
D.
Prohibit all use of motor vehicles on all roads in the city.
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C. Encourage using public transportation rather than driving individual cars.
°ω° please help, giving brainliest °ω°
Answer:
D.) Environment was hot and dry.
Explanation:
The question says "found in texas"
Texas is not:
coldwarm and wetflooded(3) (b) The mean concentration of red blood cells in an adult is 5.5 × 106 cells per mm3 1 mm3 = 0.000001 dm3 Calculate the mean number of red blood cells in 1 dm3 Give your answer in standard form.
Answer:
The correct answer is - 5.5*10^12 cells per dm^3
Explanation:
Given:
The mean concentration of red blood cells in an adult = 5.5 × 10^6
or = 5500 000
1 mm3 = 0.000001 dm^3
Solution:
Then, 1 dm^3 = 1000000 mm^3
(55000000 × 1000000) = 5500,000,000,000
= 5.5 × 10^12
What are some negative impacts of carbon storage in ocean water and
how this might affect humans?
Rapid reproduction is an advantage of which process? gamete formation sexual reproduction asexual reproduction chromosome duplication
Answer:
Rapid reproduction occurs in mitosis,
Asexual reproduction where the chromosomes are duplicated.
Explanation:
Asexual reproduction usually occurs in about 2 hours. This facilitates a more rapid response to repair damage and grow other similar/duplicate cells like skin and red blood cells.
Sexual reproduction is meosis, and takes more steps, more complex and takes longer. Provides for diversity in genetics etc. Multiple error checking during the process
Rapid reproduction is an advantage for Asexual reproduction as in this type of reproduction, the organism undergoes reproduction to produce offsprings within a small time thus requires rapid reproduction. Thus, the correct option is C.
What is Asexual Reproduction?Asexual reproduction is a type of reproduction which does not require gamete formation. In this process, a single parent cell divides to form two or more daughter cells by the division through mitosis.
Bacteria such as E.coli undergoes reproduction to form new generation of offsprings within a few minutes and thus this reproduction requires rapid division of the DNA to form daughter cells and thus rapid reproduction is an advantage of asexual reproduction.
Therefore, the correct option is C.
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In photosynthesis, chlorophyll traps _____.
Answer:
In photosynthesis, chlorophyll absorbs energy to transform carbon dioxide and water into carbohydrates and oxygen. Chlorophyll is a molecule that traps light. Good luck :)
Explanation:
Natural selection is also known as
Answer:the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully expounded by Charles Darwin and is now believed to be the main process that brings about evolution.
Explanation:
Brainliest?
Answer:
Survival of the fittest.
Explanation:
Hope this helps.
8. Which of the following is true about the rate
of evolution?
A. Evolution can occur over a weekend
B. Evolution occurs in several months
C Evolution occurs over hundreds of years
D. Evolution occurs over millions of years
anyone good at biology need really help on this will be marked brainliest
Answer:
400X (10 x 40 = 400).
Explanation:
:)
Answer:
Should be 400x
Explanation:
Just take the power of the objective (40x) and multiply by the power of the eyepiece, usually 10X.
Please answer only the first 2.
Answer:
Co2 and H20
Explanation:
(won't explain because ur in a rush!!!)
Answer and i will give brainly
Answer:
Pneumonia
Explanation:
The answer is most likely Pneumonia as Emphysema doesnt usually have fluid in lungs as a symptom.
Answer:
pneumonia
Explanation:
because pneumonia leads to fluid build up in the tiny air sacs in your lungs, but it's caused with the virus, bacteria or fungus. symptoms include coughing, shortness of breath and more.
how sclerenchyma tissues are important for plant though they are dead tissue ?
Answer:
Hey friend !!!
The cells of sclerencyma are without nucleus and protoplast....they are dead cells..
They provide mechanical support to organs of the plant body....
Hence they are important for plants....
Answer:
Sclerenchyma tissues are tissues that makes up parts of the plants that are hard. Like the nuts and covering seeds etc, These tissues have a hard thickness providing agent called lignin and lignin makes the cell wall too hard the sometimes the cell contains nothing. This cell mainly provides mechanical support to the plant
Give me an example of each by editing this DNA Below:
GAA TAC CGG TAG CGA
Answer:
could you specify your answer please
Explanation:
What is Global Warming? Increasing temperature in Earth's atmosphere. ооо Decreasing temperature in a city Increasing rain rates in Earth. O Decreasing temperature rates.
Answer:
Increasing tempeeature in earths atmosphere
Organisms of a single species that share the same geographic location at the same time make up a _____________
Answer:
population
Explanation:
2. Isabel went in her friend's garden. This garden was full of flowering plants. She
enjoyed looking at them. She wonders why rose and bougainvillea plants were not
planted inside the fence. What structures protect them from predators?
A. their leaves are poisonous
B. they have unpleasant smell
C. they have sharp leaf blades
D. their stems have thorns that protect them
Answer:
Option D is the correct answer
Their stems have thorns and protect them