Which of these statements is true of stable atoms?
a. They have an equal number of protons and neutrons.
b. They have an equal number of electrons and protons.
c. They have an equal number of neutrons and electrons.
d. They are constantly losing or gaining particles.
Answer:
b they have equal number of protons and electrons
Explanation:
d is the ans vbbv. u bb
vu
Which is a viable way to combat the effects of drought on the population of Sub-Saharan Africa?
A)
seeding the clouds
B)
increasing irrigation
C. increasing livestock
D)
planting many trees
H
Answer:
i am not that smart but think it's C
Explanation:
A HOX gene called Pax6 is required for developing light sensing eyes (or eye-like structures) in a range of taxa including Cnidaria, Mollusca, Arthropoda, and Chordata. Humans (Chordata) and squid (Mollusca) have complex eyes with many shared features, like a lens, that are NOT found in other taxa that have eyes or eye-like structures. Which of the following statements is TRUE?A. If human eyes and squid eyes are analogous, then the Pax6 gene in humans and squid will be nearly identical.B. If human eyes and squid eyes are analogous, then their shared common ancestor would also have complex eyes.C. If human eyes and squid eyes are homologous, then the Pax6 gene in humans and squid will be nearly identical.D. If human eyes and squid eyes are homologous, then they have independent evolutionary origins.
Answer:
hgs do lm jb each l ok bc Z ok but we b
tell me
How can the idea that different minerals are formed in different environments provide evidence for energy and matter cycling?
Please do not copy and put in your own words.
Answer:
Various environment have unique environmental properties that make up matter.
Explanation:
Life on earth follows a cyclic nature, the energy that is received from the sun is recycled back to space. Similarly, various environments such as terrestrial, aquatic all are possessed different energy and have matter circulating through the ecosystem. Different factors like climate vegetation and other organisms help in the formation of soil which constitutes certain minerals. Similarly, the different region has diverse geologic settings that lead to the formation of diverse minerals such as limestone, sandstone, and resources like coal, petroleum, etc.How would you classify the most recent historical examples of STEM
Answer:
science discovries because it is
Explanation:
What likely occurred in the nebula as a result of these changes?
Answer:
In the solar nebula, this likely grew out of inhomogeneties in the initial contraction. ... After this, the nebula became more transparent to solar radiation, and the nebula would have begun to cool. This would have allowed new compounds to form, growing as dust grains by condensation. Explanation:
give me brainly:) pls i only got two brainly :/
In the past 250 years how many volcanoes have erupted?
Answer:
Graph showing known historically active volcanoes, number of volcanoes reported to be active each year, and population. The line labeled "Known Historically Active Volcanoes" (right scale) is the cumulative number of volcanoes with an historically recorded eruption by that year. "Volcanoes Active Per Year" since 1400 CE (black line) and 10-year running mean of same data (thick red line) is also based on reported eruptions (those with uncertainty dates greater than 1 year are not included, nor are uncertain eruptions). "Population" (right scale) is the world's estimated human population; data from McEvedy and Jones (1978) and (since 1750) Population Reference Bureau, Washington, D.C. See text for further explanation.
A dramatic increase in both the number of historically active volcanoes and recorded eruptions took place about 1500 CE. These resulted in part from the great Spanish/Portuguese marine explorations – the Age of Discovery – around the end of the 15th century, when explorers opened Latin America and much of the western Pacific to European record-keeping. Perhaps equally important was the development and widespread distribution of the printing press in the late 15th century, markedly increasing the likelihood that new volcanological records would survive. Through the 17th and into the early 18th century the recognition of additional active volcanoes generally corresponded with steadily increasing eruption reports. By the 18th century global trade was flourishing, the Industrial Revolution was under way, and the heightened reporting of eruptions noticeably accelerated the discovery of new volcanoes. The list has continued to grow, with several important volcanic regions such as New Zealand, Alaska, and Hawaii being unrepresented until the last 250 years.
Explanation:
please mark me as brainlest answer hope this helps
Which layer is between the mesosphere and the inner core? (7 points)
a
Asthenosphere
b
Crust
c
Lithosphere
d
Outer Core
Answer:
i think its otter core im not sure
Explanation:
doing the test rn i will be back and say if its wrong or not
Answer:outer core
Explanation:
Name any four animals which take careof their babies
Answer:
Peguins, Elephants, Orangutans, Octopi
Explanation:
Hope this helps :)
-Octopi litterally starve themselves for their children when nesscary it's cute-
-For the first full month of life, baby orangutans never let go of their mother-
-All the female adults in a elephant herd take turns watching the baby-
-Dad emperor peguins take care of their children for two months while the momma is out at sea replenshing herself, in both egg and baby form-
V
Which list places different units of matter in the correct sequence from
largest to smallest?
O A. Human body, organs, molecules, atoms, neutrons
B. Human body, molecules, organs, atoms, neutrons
C. Human body, atoms, organs, molecules, neutrons
D. Human body, organs, atoms, molecules, neutrons
Answer: A
Explanation:
A list that places different units of matter in the correct sequence from largest to smallest is as follows:
The human body, organs, molecules, atoms, and neutrons.Thus, the correct option for this question is A.
What is Matter?A matter may be characterized as any substance that significantly possesses mass and takes up space by having volume. It is anything that physically takes up space and can be weighed. In other words, the matter has volume and mass. There are many different substances, or types of matter, in the universe.
The human body is a structure that consists of numerous body systems in order to perform multiple functions for their survival. These body systems may include various organs. Molecules are composed of atoms that have three subatomic particles like electrons, protons, and neutrons.
Therefore, the Human body, organs, molecules, atoms, and neutrons is on the list that places different units of matter in the correct sequence from largest to smallest. Thus, the correct option for this question is A.
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The practice of science can answer only scientific questions. And scientific
questions guide the design of investigations. What is usually true of the
possible answers to a scientific question?
A. They can lead to additional questions about the phenomenon.
B. They overturn an established scientific theory.
OC. They lead to the discovery of.a new scientfic law.
OD. They remove the need for further scientific inquiry.
Answer:
A scientific question is usually guided by a hypothesis which can lead to additional questing about the phenomenon (A).
Please rate positive and give brainlist for future help!
Explanation:
A scientific question can lead to additional questions about the phenomenon. The correct option is A.
What is a scientific question?A scientific question is one that could result in a hypothesis and assist us in determining the cause of an observation.
A good scientific hypothesis must be verifiable and quantifiable. You can perform an experiment to find the solution. eschews all opinions of any type.
A scientific question is testable, to put it simply. A testable inquiry is one that focuses on things, creatures, or occurrences in our immediate environment.
By examining quantifiable data and supporting evidence, it can be resolved by experimentation, observation, or other data collection methods.
A scientific query can spawn more inquiries into the phenomenon.
Thus, the correct option is A.
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In pea plants the allele for tall plants in dominant to the allele for short plants, and the allele for purple flower colour is dominant to the allele for white flower colour. What is the genotype of a short plant produced from a cross between a true-breeding purple flowered pea plant and a true-breeding white flowered pea plant? *
1.TTPP
2.ttpp
3.ttPP
4.ttPp
5.TtPp
Answer:
The correct answer is - 4. ttPp
Explanation:
Given - tall is dominant over short pea plant
let assume T is dominant and t is short which is recessive
Similarly, P for dominant purple flower and p for white flower
The offspring has a short plant which means it has both t allele or recessive allele for the height of a plant by the cross of a true-breeding purple and true-breeding white:
P P
p Pp Pp
p Pp Pp
This means the offspring would have a heterozygous case for the genotype of the flower of the pea plant
Thus, the correct answer is ttPp
please help!!!!!!!!!!!!
1. **In the procedure shown below, a calcium chloride solution is mixed with a sodium sulfate solution to create the products shown. Which of the following is illustrated by this activity?
a. The law of conservation of mass
b. The theory of thermal equilibrium
C. The law of conservation of energy
d. Newton's 2nd Law
The reaction follows the law of conservation of mass since the mass remains same before and after the reaction. Therefore, option (A) is correct.
What is the law of conservation of mass?According to the principle known as the rule of conservation of mass, during a chemical reaction, mass can neither be created nor destroyed. When coal is burned, for instance, the atom of carbon that it contains transforms into carbon dioxide. The mass of the carbon atom remains constant even as it transforms from a solid structure to a gaseous state.
The study of chemical reactions, as well as their generation, places a significant emphasis on the principle of mass conservation. Scientists are able to make accurate forecasts regarding the amounts of products that will be produced from a certain reaction if they are aware of both the amounts of reactants and their identities.
Thus, in the above reaction the mass is conserved and option (A) is correct.
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In one or two sentences, explain how the chemical equation for cellular respiration shows that plants cycle matter. Include the numbers of molecules and atoms involved to support your explanation.
Carbon dioxide + Water Glucose (sugar) + Oxygen CO2 + H2O C6H12O6 + 6O2 Cellular respiration or aerobic respiration is a series of chemical reactions which begin with the reactants of sugar in the presence of oxygen to produce carbon dioxide and water as waste products.
Glucose + Oxygen ------> ATP + Carbon dioxide + Water
C6H12O6 + 6O2 ----------> 36ATP + CO2 + H2O
The chemical equation for cellular respiration shows that plants cycle matter because oxygen and glucose that is produced by the plants is used by the human body for the generation of energy in the form of ATP molecules, water and carbondioxide gas.
This carbondioxide gas is released by animals which is used by the plants in order to make their own food during the process of photosynthesis so we can conclude that the chemical equation for cellular respiration shows that the plants cycle matter.
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Which animal had to eat the most frequently in order to maintain its energy
level?
A. Rattlesnake
B. Small fish
C. Hummingbird
O D. Kangaroo rat
Answer:D
Explanation:
Answer:
C. Hummingbird Have a great night or day
Explanation:
100% correct A P 3 X I just did the assessment i got all the answers right :)
Which is an immune response?
Answer:
I think B because white blood cells fight off bacteria and stuff. I hope this is right for you! if not I am sorry! Have a great holiday.
What is the main factor that causes the bedrock to weather at different rates?
Answer:
more resistant
Explanation:
bedrock is resistant to weathering and erosion
What is the difference between a tortoise and a turtle
Turtles can be aquatic, semi-aquatic, or mostly terrestrial. Tortoises are turtles that live on land and aren't equipped for water.
(hope this helps ^^)
Answer:
a tortoise is a land dwelling animal and can't not swim way to heavy and a turtle is made for water built to move through water and not as capable of being on land like a tortoise
Explanation:
ASAP PLEASE
Which of the following statements is true?
A) Thymine pairing with adenine is a DNA mutation.
B) Tt and tt plants have the same genotype.
C) Bb and BB flowers have the same phenotype.
D) Intelligence is determined by a single genes.
Answer:
B.
Explanation:
Yes, Tt and tt have the same geneotype.
Two geneotypes can result in the same phenotype.
~ ₕₒₚₑ ₜₕᵢₛ ₕₑₗₚₛ! :₎ ♡ ~
do all animal cells have same genetic content(DNA)?!... if so why are the cells grouped into tissues?
Answer:
Becasue there are different type of cells within the body that function different ways.
Explanation:
Which pair of soil compounds does manure management balance?
nitrogen and ammonia
nitrogen and phosphorous
ammonia and phosphorous
potassium and phosphorous
Answer:
I think nitrogen and phosphorus
During most of the cell's life, the chromosomes will be in the form of
O Chromatin
O Sister chromatids
O Homologous chromosomes
O Tetrads
During most of the cell's life, the chromosomes will be in the form of - Chromatin.
The DNA wrapped around histones is further organized into higher-order structures that give a chromosome its shape.
This form of the chromosome is called chromatin and it is the form chromosome most of the life of the cell.In this form chromatin is decondensed, meaning that it exists in long, thin strings form.It is found in the interphase most of the cell's life.Thus, During most of the cell's life, the chromosomes will be in the form of - Chromatin.
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which organelles can be found in both plant and animal cells
Answer:
1. Cytoplasm
2. Plasma membrane
3. Nucleus
4. Mitochondria
Describe three roles of lipids
Answer:
-storing energy
-chemical messengers
-structure
Explanation:
Consider the following population:
Blood Type A B AB O
Number of individuals 533 84 67 316
What is the frequency of the IB allele in this population?
Answer:
0.079
Explanation:
Using Hardy Weinberg equilibrium for blood group;
p² + 2pq + q² + 2pr + r² + 2qr = 1
where;
p = allele frequency for A
q = allele frequency for B
r = allele frequency for O
N(p² + 2pr) = the number of allele for type A people
N(q² + 2qr) = the number of allele for type B people
N(2pq) = the number of allele for AB people
N(r²) = the number of allele for O people
N(r²) = 316
r² = 316/1000
r² = 0.316
r = [tex]\sqrt{0.316[/tex]
r = 0.56
To find the frequency of the [tex]I^B[/tex] allele;
N(q² + 2qr) = 84
q² + 2qr = 84/1000
q² + 2qr = 0.084
where;
r = 0.56
q² + 2q(0.56) = 0.084
q² + 1.12q = 0.084
q² + 1.12q - 0.084 = 0
Using the quadratic formula:
[tex]=\dfrac{-b \pm \sqrt{b^2-4ac}}{2a}[/tex]
where;
a = 1, b = 1.12, c = -0.084
[tex]=\dfrac{-(1.12) \pm \sqrt{(1.12)^2-4(1)(-0.084)}}{2\times 1}[/tex]
[tex]=\dfrac{-(1.12) \pm \sqrt{1.2544-(-0.336)}}{2}[/tex]
[tex]=\dfrac{-(1.12) \pm \sqrt{1.5904}}{2}[/tex]
[tex]=\dfrac{-(1.12) \pm 1.261}{2}[/tex]
[tex]=\dfrac{-(1.12) + 1.261}{2} \ \ OR \ \ \dfrac{-(1.12) - 1.261}{2}[/tex]
[tex]=\dfrac{0.141}{2} \ \ OR \ \ \dfrac{-2.381}{2}[/tex]
[tex]\simeq 0.079 \ \ OR \ \ -1.1905[/tex]
Since our value can be negative; then the frequency of the [tex]I^B[/tex] allele in this population is 0.079.
12 less then m is no less than 132
Answer:
144
Explanation:
acc. to the question :
m - 12 = 132
adding 12 to both the sides :
m = 132 + 12
= 144
Answer:
m=144...........
Explanation:
12+132=144
Refer to the diagram ( Figure 2) provided below . Which process is taking place? Sc. 912. L.16.15
Answer:
Meiosis
Explanation:
Took the test
In tomatoes, the following hypothetical pathway gives rise to different fruit colors. Y gene R gene Precursor substrate Intermediate substrate Product and lacks color and fruit is and fruit is yellow fruit is red green from chlorophyll Mutations in the genes for both of the enzymes produce lack-of-function, recessive alleles. What would be the expected genotypic and phenotypic segregation ratios if you self-fertilize a RrYy individual
Answer:
Explanation:
From the information given:
The analysis of the hypothetical pathway gives:
Y gene R gene
Green fruit → Yellow fruit → Red fruit.
If RrYy undergoes self-fertilization, the expected genotypic and phenotypic segregation is:
RrYy × RrYy
The progenitors to undergo the segregation are as follows:
RY Ry rY ry
RY RRYY RRYy RrYY RrYy
(red) (red) (red) (red)
Ry RRYy RRyy RrYy Rryy
(red) (green) (red) (green)
rY RrYY RrYy rrYY rrYy
(red) (red) (yellow) (yellow)
ry RrYy Rryy rrYy rryy
(red) (green) (yellow) (green)
Thus; the expected phenotypic ratio is:
= 9(red) : 3(yellow) : 4(green)
The expected phenotypic ratio is:
= 1(RRYY): 2(RRYy): 2(RrYY): 4(RrYy): 1(RRyy): 2(Rryy): 1(rrYY): 2(rrYy): 1(rryy)
What planet is this? I'll give brainliest!
Cells in many-celled organisms...
A. All look the same
b. All have the same structure
c. are often quite different from each other
d. are the same size in every part of the organism
Answer:
c. are often quite different from each other
Explanation:
Multicellular organisms - composed of several different cells: Cells in these organisms differ in relation to the function to be performed.
The cells in these organisms are growing, developing, and reproducing.
The cells differ in shape, size, and role they have in the organism.
In the group of multicellular organisms are animals (Animalia), plants (Plantae), and fungi (Fungi).
Cells in many-celled organisms are often quite different from each other. Therefore option C is correct.
In many-celled organisms, such as animals and plants, cells can be specialized for specific functions, leading to their differentiation and diversification.
Different types of cells have distinct structures and perform specific tasks within the organism.
For example, nerve cells (neurons) are specialized for transmitting electrical signals, muscle cells for contraction, and blood cells for carrying oxygen and nutrients.
This specialization allows for efficient division of labor, where each cell type contributes to the overall functioning of the organism.
The diversity of cell types and their functions is a fundamental aspect of the complex organization and functioning of multicellular organisms, contributing to their overall biological complexity and adaptability.
Therefore option C are often quite different from each other is correct.
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